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import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return true if all numbers in the array list l are below threshold t. // >>> belowThreshold((new ArrayList<Long>(Arrays.asList((lon...
}
} return true; } }
def check_if_last_char_is_a_letter(txt: str) -> bool: """ Create a function that returns True if the last character of a given string is an alphabetical character and is not a part of a word, and False otherwise. Note: "word" is a group of characters separated by space. Examples: >>> check_...
return True
else: return False
//Implement a function that takes an non-negative integer and returns an array of the first n // integers that are prime numbers and less than n. // for example: // >>> count_up_to(5) // [2, 3] // >>> count_up_to(11) // [2, 3, 5, 7] // >>> count_up_to(0) // [] // >>> count_up_to(20) // [2, 3, 5, 7, 11, 13, 17, 19] // >...
var prime = true;
for (var j = 3; j < i; j += 2){ if (i % j === 0){ prime = false; break; } } if (prime) output.push(i); } return output; }
from typing import List def has_close_elements(numbers: List[float], threshold: float) -> bool: """ Check if in given list of numbers, are any two numbers closer to each other than given threshold. >>> has_close_elements([1.0, 2.0, 3.0], 0.5) False >>> has_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2...
return False
from typing import List def match_parens(lst: List[str]) -> str: """ You are given a list of two strings, both strings consist of open parentheses '(' or close parentheses ')' only. Your job is to check if it is possible to concatenate the two strings in some order, that the resulting string will b...
for s in strings:
open_parens = 0 close_parens = 0 for c in s: if c == '(': open_parens += 1 elif c == ')': if open_parens: open_parens -= 1 else: close_parens += 1 if open_parens == 0 and close...
from typing import List def sum_squares(lst: List[int]) -> int: """" This function will take a list of integers. For all entries in the list, the function shall square the integer entry if its index is a multiple of 3 and will cube the integer entry if its index is a multiple of 4 and not a multiple of 3....
for index in range(len(lst)):
if index % 3 == 0: lst[index] = lst[index] ** 2 elif index % 4 == 0: lst[index] = lst[index] ** 3 return sum(lst)
//For a given array of input numbers, calculate Mean Absolute Deviation // around the mean of this dataset. // Mean Absolute Deviation is the average absolute difference between each // element and a centerpoint (mean in this case): // MAD = average | x - x_mean | // >>> mean_absolute_deviation([1.0, 2.0, 3.0, 4.0]) //...
sum_abs_diff += Math.abs(numbers[i] - mean);
} return sum_abs_diff / numbers.length; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You are given an array array list of integers. // You need to find the largest prime value and return the sum of its digits. //...
}
} } if (largestPrime == 0) { return 0l; } else { long output = 0l; while (largestPrime > 0) { output += largestPrime % 10; largestPrime /= 10; } return output; } } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // In this problem, you will implement a function that takes two array lists of numbers, // and determines whether it is possible to p...
}
} } return (lst1.stream().allMatch(x -> x % 2 == 0)) ? "YES" : "NO"; } }
//Write a function that accepts two arrays of strings and returns the array that has // total number of chars in the all strings of the array less than the other array. // if the two arrays have the same number of chars, return the first array. // Examples // >>> total_match([], []) // [] // >>> total_match(["hi", "ad...
return lst1;
} }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You will be given the name of a class (a string) and an array array list of extensions. // The extensions are to be used to load ad...
if (extensions.size() == 0) {
return class_name; } int strength = Integer.MIN_VALUE; String strongest = ""; for (String s : extensions) { int cap = (int)s.chars().filter(c -> Character.isUpperCase(c)).count(); int sm = (int)s.chars().filter(c -> Character.isLowerCase(c)).count(); ...
//You are given a word. Your task is to find the closest vowel that stands between // two consonants from the right side of the word (case sensitive). // Vowels in the beginning and ending doesn't count. Return empty string if you didn't // find any vowel met the above condition. // You may assume that the given stri...
let result = [];
if (word.length === 1) { return "" } else { while (i >= 0) { if (vowels.includes(word[i])) { if (i > 0 && i < word.length - 1) { if (!vowels.includes(word[i-1]) && !vowels.includes(word[i+1])) { result.push(word[i]); ...
from typing import List def count_up_to(n: int) -> List[int]: """Implement a function that takes an non-negative integer and returns an array of the first n integers that are prime numbers and less than n. for example: >>> count_up_to(5) [2, 3] >>> count_up_to(11) [2, 3, 5, 7] >>> count...
if number % divisor == 0:
is_prime = False break if is_prime: result.append(number) return result
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You are given an array array list of integers. // You need to find the largest prime value and return the sum of its digits. //...
return output;
} } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Insert a number 'delimeter' between every two consecutive elements of input array list `numbers' // >>> intersperse((new ArrayList<...
for (int i = 0; i < (numbers.size()); i++) {
result.add(numbers.get(i)); if ((i < (numbers.size() - 1))) { result.add(delimeter); } } return result; } }
//Given an array of numbers, return whether or not they are sorted // in ascending order. If array has more than 1 duplicate of the same // number, return false. Assume no negative numbers and only integers. // Examples // >>> is_sorted([5]) // true // >>> is_sorted([1, 2, 3, 4, 5]) // true // >>> is_sorted([1, 3, 2, 4...
for (var x of lst){
if (last == null){ last = x; } else if (x < last){ return false; } else if (x == last){ if (dupe_found){ return false; } else { dupe_found = true; } } else { last = x; dupe...
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given a positive integer, obtain its roman numeral equivalent as a string, // and return it in lowercase. // Restrictions: 1 <=...
if (num >= 400) {
res += "cd"; num -= 400; } while (num >= 100) { res += "c"; num -= 100; } if (num >= 90) { res += "xc"; num -= 90; } if (num >= 50) { res += "l"; num -= 50; } i...
//You have been tasked to write a function that receives // a hexadecimal number as a string and counts the number of hexadecimal // digits that are primes (prime number, or a prime, is a natural number // greater than 1 that is not a product of two smaller natural numbers). // Hexadecimal digits are 0, 1, 2, 3, 4, ...
return result;
}
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Write a function that takes an array array list of numbers as input and returns // the number of elements in the array array list ...
}
} helper h = new helper(); return nums.stream().filter(x -> x > 10).filter(x -> { long firstDigit = h.getFirstDigit(x); long lastDigit = h.getLastDigit(x); return firstDigit % 2 != 0 && lastDigit % 2 != 0; }).count(); } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return n-th Fibonacci number. // >>> fib((10l)) // (55l) // >>> fib((1l)) // (1l) // >>> fib((8l)) // (21l) ...
else if (n == 1) {
return 1l; } else { return Problem.fib((n - 1)) + Problem.fib((n - 2)); } } }
from typing import List def do_algebra(operator: List[str], operand: List[int]) -> int: """ Given two lists operator, and operand. The first list has basic algebra operations, and the second list is a list of integers. Use the two given lists to build the algebric expression and return the evaluation...
for idx, op in enumerate(operator):
expr.append(op) expr.append(str(operand[idx + 1])) return eval("".join(expr))
def right_angle_triangle(a: int, b: int, c: int) -> bool: """ Given the lengths of the three sides of a triangle. Return True if the three sides form a right-angled triangle, False otherwise. A right-angled triangle is a triangle in which one angle is right angle or 90 degree. Example: >>> ...
a, b, c = sorted([a, b, c])
return a ** 2 + b ** 2 == c ** 2
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given an array array list of integers, sort the integers that are between 1 and 9 inclusive, // reverse the resulting array array l...
return i1.compareTo(i2);
} }); Collections.reverse(good); for (Long i : good) { res.add(a[i.intValue() - 1]); } return res; } }
//brackets is a string of "<" and ">". // return true if every opening bracket has a corresponding closing bracket. // >>> correct_bracketing("<") // false // >>> correct_bracketing("<>") // true // >>> correct_bracketing("<<><>>") // true // >>> correct_bracketing("><<>") // false function correct_bracketing(brackets)...
}
if (opens < 0) { return false; } } return opens === 0; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given an array array list of non-negative integers, return a cojava of the given array array list after sorting, // you will sort t...
}
if(array.size()>1) { if((array.get(0)+array.get(array.size()-1))%2==0) { Collections.sort(array, Collections.reverseOrder()); } else { Collections.sort(array); } } return array; } }
//I think we all remember that feeling when the result of some long-awaited // event is finally known. The feelings and thoughts you have at that moment are // definitely worth noting down and comparing. // Your task is to determine if a person correctly guessed the results of a number of matches. // You are given two ...
}
//Task // We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c // then check if the result string is palindrome. // A string is called palindrome if it reads the same backward as forward. // You should return an array containing the result string and true/fa...
const result = [];
if (filterString === filterStringReverse) { result.push(filterString, true); } else { result.push(filterString, false); } return result; }
//We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The // numbers in the array will be randomly ordered. Your task is to determine if // it is possible to get an array sorted in non-decreasing order by performing // the following operation on the given array: // You are allowed to perform right shift o...
return false;
} else{ return true; } }
//Implement a function that takes an non-negative integer and returns an array of the first n // integers that are prime numbers and less than n. // for example: // >>> count_up_to(5) // [2, 3] // >>> count_up_to(11) // [2, 3, 5, 7] // >>> count_up_to(0) // [] // >>> count_up_to(20) // [2, 3, 5, 7, 11, 13, 17, 19] // >...
}
return output; }
//brackets is a string of "(" and ")". // return true if every opening bracket has a corresponding closing bracket. // >>> correct_bracketing("(") // false // >>> correct_bracketing("()") // true // >>> correct_bracketing("(()())") // true // >>> correct_bracketing(")(()") // false function correct_bracketing(brackets)...
else {
return false; } } } if (opens.length == 0){ return true; } else { return false; } }
//You are given an array arr of integers and you need to return // sum of magnitudes of integers multiplied by product of all signs // of each number in the array, represented by 1, -1 or 0. // Note: return undefined for empty arr. // Example: // >>> prod_signs([1, 2, 2, -4]) // 9 // >>> prod_signs([0, 1]) // 0 // >>> ...
pro *= -1;
} else if(arr[i] == 0){ pro *= 0; } } total *= pro; return total; } }
//You are given an array arr of integers and you need to return // sum of magnitudes of integers multiplied by product of all signs // of each number in the array, represented by 1, -1 or 0. // Note: return undefined for empty arr. // Example: // >>> prod_signs([1, 2, 2, -4]) // 9 // >>> prod_signs([0, 1]) // 0 // >>> ...
else if(arr[i] == 0){
pro *= 0; } } total *= pro; return total; } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You are given an array array list of integers. // You need to find the largest prime value and return the sum of its digits. //...
for (Long item : lst) {
long number = item; int counter = 0; if (item == 1) { continue; } if (item == 2) { counter = 1; } else { int l = 1; while (l <= (int) number) { if (numb...
//The Brazilian factorial is defined as: // brazilian_factorial(n) = n! * (n-1)! * (n-2)! * ... * 1! // where n > 0 // For example: // >>> special_factorial(4) // 288 // The function will receive an integer as input and should return the special // factorial of this integer. function special_factorial(n){ if (n > 0...
for (let i = 1; i <= n; i++) {
fact *= i; } return fact * special_factorial(n - 1); } else { return 1; } }
//Implement a function that takes an non-negative integer and returns an array of the first n // integers that are prime numbers and less than n. // for example: // >>> count_up_to(5) // [2, 3] // >>> count_up_to(11) // [2, 3, 5, 7] // >>> count_up_to(0) // [] // >>> count_up_to(20) // [2, 3, 5, 7, 11, 13, 17, 19] // >...
return output;
}
//You are given an array of two strings, both strings consist of open // parentheses '(' or close parentheses ')' only. // Your job is to check if it is possible to concatenate the two strings in // some order, that the resulting string will be good. // A string S is considered to be good if and only if all parentheses...
}
from typing import List def exchange(lst1: List[int], lst2: List[int]) -> str: """In this problem, you will implement a function that takes two lists of numbers, and determines whether it is possible to perform an exchange of elements between them to make lst1 a list of only even numbers. There is no l...
count -= 1
if count > 0: return "NO" else: return "YES"
//Given a string text, replace all spaces in it with underscores, // and if a string has more than 2 consecutive spaces, // then replace all consecutive spaces with - // >>> fix_spaces(" Example") // "Example" // >>> fix_spaces(" Example 1") // "Example_1" // >>> fix_spaces(" Example 2") // "_Example_2" // >>> fix_s...
}
//Return only positive numbers in the array. // >>> get_positive([-1, 2, -4, 5, 6]) // [2, 5, 6] // >>> get_positive([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) // [5, 3, 2, 3, 9, 123, 1] function get_positive(l){ return l.filter(e=>e>0);
}
//Write a function that takes a string and returns true if the string // length is a prime number or false otherwise // Examples // >>> prime_length("Hello") // true // >>> prime_length("abcdcba") // true // >>> prime_length("kittens") // true // >>> prime_length("orange") // false function prime_length(string){
let length = string.length;
let primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199]; if (primes.includes(length)){ return true; } else { return false; } }
from typing import List def below_threshold(l: List[int], t: int) -> bool: """Return True if all numbers in the list l are below threshold t. >>> below_threshold([1, 2, 4, 10], 100) True >>> below_threshold([1, 20, 4, 10], 5) False """ for num in l: if num >= t: return F...
return True
//Write a function that accepts two arrays of strings and returns the array that has // total number of chars in the all strings of the array less than the other array. // if the two arrays have the same number of chars, return the first array. // Examples // >>> total_match([], []) // [] // >>> total_match(["hi", "ad...
for(let item of lst2){
sum_lst2 += item.length; } if(sum_lst1 > sum_lst2){ return lst2; } else{ return lst1; } }
//This function takes an array l and returns an array l' such that // l' is identical to l in the odd indicies, while its values at the even indicies are equal // to the values of the even indicies of l, but sorted. // >>> sort_even([1, 2, 3]) // [1, 2, 3] // >>> sort_even([5, 6, 3, 4]) // [3, 6, 5, 4] function sort_ev...
}
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given an array array list of positive integers x. return a sorted array list of all // elements that hasn't any even digit. //...
long y = z % 10;
if (y % 2 == 0) { unique = false; break; } z = z / 10; } if (unique) { b.add(x.get(i)); } } Collections.sort(b); return b; } }
from typing import List def total_match(lst1: List[str], lst2: List[str]) -> List[str]: """ Write a function that accepts two lists of strings and returns the list that has total number of chars in the all strings of the list less than the other list. if the two lists have the same number of chars, r...
return lst1
return lst2
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given a positive integer, obtain its roman numeral equivalent as a string, // and return it in lowercase. // Restrictions: 1 <=...
if (num >= 9) {
res += "ix"; num -= 9; } if (num >= 5) { res += "v"; num -= 5; } if (num >= 4) { res += "iv"; num -= 4; } while (num >= 1) { res += "i"; num -= 1; } return res;...
//Given a grid with N rows and N columns (N >= 2) and a positive integer k, // each cell of the grid contains a value. Every integer in the range [1, N * N] // inclusive appears exactly once on the cells of the grid. // You have to find the minimum path of length k in the grid. You can start // from any cell, and in e...
}
if(y < n - 1){ neighbours.push(grid[x][y + 1]); } let nextCell = neighbours[0]; for(let i = 0; i < neighbours.length; i++){ let curr = neighbours[i]; if(curr < nextCell){ nextCell = curr; } } currCell = nextC...
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given a string representing a space separated lowercase letters, return a hash map // of the letter with the most repetition and co...
if (test.length() > 0) {
HashMap<String,Long> hm = new HashMap<String,Long>(); String[] ss = test.split(" "); for (String sss : ss) { if (hm.containsKey(sss)) { hm.put(sss, hm.get(sss) + 1); } else { hm.put(sss, 1l); } ...
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Write a function that takes an integer a and returns true // if this ingeger is a cube of some integer number. // Note: you ma...
}
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given an array array list of positive integers x. return a sorted array list of all // elements that hasn't any even digit. //...
}
boolean unique = true; long z = x.get(i); while (z > 0) { long y = z % 10; if (y % 2 == 0) { unique = false; break; } z = z / 10; } if (unique) { ...
from typing import Union def compare_one(a: Union[int, float, str], b: Union[int, float, str]) -> Union[int, float, str, None]: """ Create a function that takes integers, floats, or strings representing real numbers, and returns the larger variable in its given variable type. Return None if the values ...
return a
elif a < float(b_tmp): return b else: return None elif isinstance(a, str) and isinstance(b, float): a_tmp = a.replace(',', '.') if float(a_tmp) > b: return a elif float(a_tmp) < b: return b
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return true if all numbers in the array list l are below threshold t. // >>> belowThreshold((new ArrayList<Long>(Arrays.asList((lon...
Long[] a = l.toArray(new Long[l.size()]);
for (int i = 0; i < a.length; i++) { if (a[i] >= t) { return false; } } return true; } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // For a given string, flip lowercase characters to uppercase and uppercase to lowercase. // >>> flipCase(("Hello")) // ("hELLO") ...
}
//You have to write a function which validates a given date string and // returns true if the date is valid otherwise false. // The date is valid if all of the following rules are satisfied: // 1. The date string is not empty. // 2. The number of days is not less than 1 or higher than 31 days for months 1,3,5,7,8,10,12...
if(month < 1 || month > 12){
return false; }else if(month == 2){ if(day < 1 || day > 29){ return false; } }else if((month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) && (day < 1 || day > 31)){ return false; }else ...
def triangle_area(a: int, b: int, c: int) -> float: """ Given the lengths of the three sides of a triangle. Return the area of the triangle rounded to 2 decimal points if the three sides form a valid triangle. Otherwise return -1 Three sides make a valid triangle when the sum of any two sides is gr...
if a + b > c and a + c > b and b + c > a:
perimeter = (a + b + c) / 2 area = (perimeter * (perimeter - a) * (perimeter - b) * (perimeter - c)) ** 0.5 return round(area, 2) else: return -1
//Input are two strings a and b consisting only of 1s and 0s. // Perform binary XOR on these inputs and return result also as a string. // >>> string_xor("010", "110") // "100" function string_xor(a, b){ var arrayA = []; var arrayB = []; var arrayXOR = []; var result = ''; for (var i = 0; i < a.length; i++) {...
for (var k = 0; k < arrayA.length; k++) {
if (arrayA[k] !== arrayB[k]) { arrayXOR.push(1); } else { arrayXOR.push(0); } } result = arrayXOR.join(''); return result; }
//Create a function that takes integers, floats, or strings representing // real numbers, and returns the larger variable in its given variable type. // Return undefined if the values are equal. // Note: If a real number is represented as a string, the floating point might be . or , // >>> compare_one(1, 2.5) // 2.5 //...
return b;
} else { return undefined; } } else if (typeof a === "string" && typeof b === "number"){ if (a[0] > b){ return a; } else if (a[0] < b){ return b; } else { return undefined; } } else if (typeof a === "number" && typeof b === "string"){ if (a > b[0]){ retu...
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return array list with elements incremented by 1. // >>> incrList((new ArrayList<Long>(Arrays.asList((long)1l, (long)2l, (long)3l))...
l.set(i, l.get(i) + 1l);
} return l; } }
from typing import Union def compare_one(a: Union[int, float, str], b: Union[int, float, str]) -> Union[int, float, str, None]: """ Create a function that takes integers, floats, or strings representing real numbers, and returns the larger variable in its given variable type. Return None if the values ...
else:
return None elif isinstance(a, str) and isinstance(b, float): a_tmp = a.replace(',', '.') if float(a_tmp) > b: return a elif float(a_tmp) < b: return b
def solve(s: str) -> str: """You are given a string s. if s[i] is a letter, reverse its case from lower to upper or vise versa, otherwise keep it as it is. If the string contains no letters, reverse the string. The function should return the resulted string. Examples >>> solve('1234') '...
if not any(l.isalpha() for l in s):
return s[::-1] else: return ''.join(l.swapcase() if l.isalpha() else l for l in s)
//Given a grid with N rows and N columns (N >= 2) and a positive integer k, // each cell of the grid contains a value. Every integer in the range [1, N * N] // inclusive appears exactly once on the cells of the grid. // You have to find the minimum path of length k in the grid. You can start // from any cell, and in e...
for(let j = 0; j < n; j++){
let curr = grid[i][j]; if(curr < startCell){ startCell = curr; } } } let currCell = startCell; for(let l = 0; l < k; l++){ path.push(currCell); let neighbours = []; let x = null; let y = null; for(let i = 0; ...
//Given a positive integer n, return the product of the odd digits. // Return 0 if all digits are even. // For example: // >>> digits(1) // 1 // >>> digits(4) // 0 // >>> digits(235) // 15 function digits(n){ if(!n){ return "error"; } if(n < 0){ return "error"; } var temp = 0; va...
var odd = true;
for(n; n > 0; n = Math.floor(n/10)){ temp = n % 10; if(temp % 2 != 0){ prod *= temp; odd = false; } } if(odd){ return 0; } return prod; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // We have an array array list 'arr' of N integers arr[1], arr[2], ..., arr[N].The // numbers in the array array list will be randomly...
}
return false; } }
//prime_fib returns n-th number that is a Fibonacci number and it's also prime. // >>> prime_fib(1) // 2 // >>> prime_fib(2) // 3 // >>> prime_fib(3) // 5 // >>> prime_fib(4) // 13 // >>> prime_fib(5) // 89 function prime_fib(n){ function isPrime(number){ if(number <= 3){ return number > 1; ...
fibNum++;
} return fib(fibNum - 1); }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // remove_vowels is a function that takes string and returns string without vowels. // >>> removeVowels(("")) // ("") // >>> r...
String vowels = "aeiouAEIOU";
String newText = ""; for (int i = 0; i < text.length(); i++) { if (vowels.indexOf(text.charAt(i)) == -1) { newText += text.charAt(i); } } return newText; } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Write a function vowels_count which takes a string representing // a word as input and returns the number of vowels in the string. ...
String sUpper = s.toUpperCase();
int lastIndex = sUpper.length() - 1; for (int i = 0; i < sUpper.length(); i++) { if (sUpper.charAt(i) == 'A' || sUpper.charAt(i) == 'E' || sUpper.charAt(i) == 'I' || sUpper.charAt(i) == 'O' || sUpper.charAt(i) == 'U') { sum++; } if (sUpper.charAt(i) ==...
//Create a function which takes a string representing a file's name, and returns // 'Yes' if the the file's name is valid, and returns 'No' otherwise. // A file's name is considered to be valid if and only if all the following conditions // are met: // - There should not be more than three digits ('0'-'9') in the file...
str_3.filter(item => /[0-9]/.test(item)).length < 4) {
return 'Yes'; } return 'No'; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given an array array list of numbers, return whether or not they are sorted // in ascending order. If array list has more than 1 du...
return false;
} else { if (previous_number == number.intValue()) { if (seen_2_in_a_row) { return false; } else { seen_2_in...
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // In this Kata, you have to sort an array array list of non-negative integers according to // number of ones in their binary represen...
a1 = -a1;
} if (b1 < 0) { b1 = -b1; } return Long.bitCount(a1) == Long.bitCount(b1) ? Long.compare(a, b) : Integer.compare(Long.bitCount(a1), Long.bitCount(b1)); }); return arr; } }
from typing import List def match_parens(lst: List[str]) -> str: """ You are given a list of two strings, both strings consist of open parentheses '(' or close parentheses ')' only. Your job is to check if it is possible to concatenate the two strings in some order, that the resulting string will b...
else:
close_parens += 1 if open_parens == 0 and close_parens == 0: return 'Yes' return 'No'
//For a given string, flip lowercase characters to uppercase and uppercase to lowercase. // >>> flip_case("Hello") // "hELLO" function flip_case(string){ var result = ""; for(var i = 0; i < string.length; i++){ if(string[i] == string[i].toUpperCase()){ result += string[i].toLowerCase(); }else{ result += str...
}
return result; }
from typing import List def search(lst: List[int]) -> int: """ You are given a non-empty list of positive integers. Return the greatest integer that is greater than zero, and has a frequency greater than or equal to the value of the integer itself. The frequency of an integer is the number of times i...
else:
dic[i] = 1 maxValue = -1 for key, value in dic.items(): if value >= key and key > maxValue: maxValue = key return maxValue
//You are given a word. Your task is to find the closest vowel that stands between // two consonants from the right side of the word (case sensitive). // Vowels in the beginning and ending doesn't count. Return empty string if you didn't // find any vowel met the above condition. // You may assume that the given stri...
} else {
while (i >= 0) { if (vowels.includes(word[i])) { if (i > 0 && i < word.length - 1) { if (!vowels.includes(word[i-1]) && !vowels.includes(word[i+1])) { result.push(word[i]); } } } i...
//You are given a rectangular grid of wells. Each row represents a single well, // and each 1 in a row represents a single unit of water. // Each well has a corresponding bucket that can be used to extract water from it, // and all buckets have the same capacity. // Your task is to use the buckets to empty the wells. ...
maxFill += Math.ceil(sum/capacity);
} return maxFill; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Create a function which takes a string representing a file's name, and returns // 'Yes' if the the file's name is valid, and return...
}
if (name.length() == 0) { return result; } if (!Character.isLetter(name.charAt(0))) { return result; } return "Yes"; } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You are given a non-empty array list of positive integers. Return the greatest integer that is greater than // zero, and has a fre...
long val = lst.get(i);
if (map.containsKey(val)) { map.put(val, map.get(val) + 1); } else { map.put(val, (long)1); } if (map.get(val) >= val && val > max) { max = val; } } return max; } }
//For a given array of input numbers, calculate Mean Absolute Deviation // around the mean of this dataset. // Mean Absolute Deviation is the average absolute difference between each // element and a centerpoint (mean in this case): // MAD = average | x - x_mean | // >>> mean_absolute_deviation([1.0, 2.0, 3.0, 4.0]) //...
for(var i = 0; i < numbers.length; i++){
sum_abs_diff += Math.abs(numbers[i] - mean); } return sum_abs_diff / numbers.length; }
//Check if in given array of numbers, are any two numbers closer to each other than // given threshold. // >>> has_close_elements([1.0, 2.0, 3.0], 0.5) // false // >>> has_close_elements([1.0, 2.8, 3.0, 4.0, 5.0, 2.0], 0.3) // true function has_close_elements(numbers, threshold){ for(var i = 0; i < numbers.length; i+...
return false;
}
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Evaluate whether the given number n can be written as the sum of exactly 4 positive even numbers // Example // >>> isEqualToSum...
}
return false; } }
//Given a non-empty array of integers, return the sum of all of the odd elements that are in even positions. // Examples // >>> solution([5, 8, 7, 1]) // 12 // >>> solution([3, 3, 3, 3, 3]) // 9 // >>> solution([30, 13, 24, 321]) // 0 function solution(lst){ let result = 0; for (let i = 0; i < lst.length; i++){ ...
if (lst[i] % 2 === 1){
result += lst[i]; } } } return result; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return array list of all prefixes from shortest to longest of the input string // >>> allPrefixes(("abc")) // (new ArrayList<St...
}
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You have to write a function which validates a given date string and // returns true if the date is valid otherwise false. // T...
if (day < 1 || day > 30) return valid_date;
} valid_date = true; } catch (Exception e) { valid_date = false; } return valid_date; } }
def is_multiply_prime(a: int) -> bool: """Write a function that returns true if the given number is the multiplication of 3 prime numbers and false otherwise. Knowing that (a) is less then 100. Example: >>> is_multiply_prime(30) True 30 = 2 * 3 * 5 """ n = a d = 2 prime_fact...
return True
else: return False
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows: // fib4(0) -> 0 // fib4(1)...
if (n == 1) return 0;
if (n == 2) return 2; if (n == 3) return 0; return fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4); } }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Given a non-empty array list of integers, return the sum of all of the odd elements that are in even positions. // Examples // ...
}
} return sum; } }
def fib4(n: int) -> int: """The Fib4 number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows: fib4(0) -> 0 fib4(1) -> 0 fib4(2) -> 2 fib4(3) -> 0 fib4(n) -> fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4). Please write a function to efficiently compute the n-...
return 2
elif n == 3: return 0 else: return fib4(n-1) + fib4(n-2) + fib4(n-3) + fib4(n-4)
//Create a function which takes a string representing a file's name, and returns // 'Yes' if the the file's name is valid, and returns 'No' otherwise. // A file's name is considered to be valid if and only if all the following conditions // are met: // - There should not be more than three digits ('0'-'9') in the file...
return 'Yes';
} return 'No'; }
//Given an integer. return an array that has the number of even and odd digits respectively. // Example: // >>> even_odd_count(-12) // [1, 1] // >>> even_odd_count(123) // [1, 2] function even_odd_count(num){
num = Math.abs(num);
var evens = 0; var odds = 0; for(var i = 0; i < num.toString().length; i++){ if(num.toString()[i] % 2 == 0){ evens ++; } else{ odds ++; } } return [evens, odds]; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // Return the number of times the digit 7 appears in integers less than n which are divisible by 11 or 13. // >>> fizzBuzz((50l)) ...
}
} } } return res; } }
from typing import List, Optional def longest(strings: List[str]) -> Optional[str]: """ Out of list of strings, return the longest one. Return the first one in case of multiple strings of the same length. Return None in case the input list is empty. >>> longest([]) None >>> longest(['a', 'b', 'c'])...
return None
else: long = strings[0] for s in strings: if len(s) > len(long): long = s return long
def fibfib(n: int) -> int: """The FibFib number sequence is a sequence similar to the Fibbonacci sequnece that's defined as follows: fibfib(0) == 0 fibfib(1) == 0 fibfib(2) == 1 fibfib(n) == fibfib(n-1) + fibfib(n-2) + fibfib(n-3). Please write a function to efficiently compute the n-th element ...
while n > 0:
a, b, c = b, c, a + b + c n -= 1 return a
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // This function takes an array array list l and returns an array array list l' such that // l' is identical to l in the odd indicies,...
return res;
} }
//You are given two intervals, // where each interval is a pair of integers. For example, interval = (start, end) = (1, 2). // The given intervals are closed which means that the interval (start, end) // includes both start and end. // For each given interval, it is assumed that its start is less or equal its end. // Y...
let end = Math.min(interval1[1], interval2[1]);
if (start >= end) { return "NO"; } let length = end - start; let primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]; return primes.includes(length) ? "YES" : "NO"; }
//Task // We are given two strings s and c, you have to deleted all the characters in s that are equal to any character in c // then check if the result string is palindrome. // A string is called palindrome if it reads the same backward as forward. // You should return an array containing the result string and true/fa...
result.push(filterString, false);
} return result; }
//From an array of integers, remove all elements that occur more than once. // Keep order of elements left the same as in the input. // >>> remove_duplicates([1, 2, 3, 2, 4]) // [1, 3, 4] function remove_duplicates(numbers){ let result = [];
numbers.forEach(function(value){
if(numbers.indexOf(value) === numbers.lastIndexOf(value)){ result.push(value); } }); return result; }
import java.util.*; import java.lang.reflect.*; import org.javatuples.*; import java.security.*; import java.math.*; import java.io.*; import java.util.stream.*; class Problem { // You have to write a function which validates a given date string and // returns true if the date is valid otherwise false. // T...
}
valid_date = true; } catch (Exception e) { valid_date = false; } return valid_date; } }
//Circular shift the digits of the integer x, shift the digits right by shift // and return the result as a string. // If shift > number of digits, return digits reversed. // >>> circular_shift(12, 1) // "21" // >>> circular_shift(12, 2) // "12" function circular_shift(x, shift){ var str = x.toString(); var len = str...
}
}else{ res = str.substring(len-shift) + str.substring(0, len-shift); } return res; }
//We have an array 'arr' of N integers arr[1], arr[2], ..., arr[N].The // numbers in the array will be randomly ordered. Your task is to determine if // it is possible to get an array sorted in non-decreasing order by performing // the following operation on the given array: // You are allowed to perform right shift o...
for(var i = 0; i < arr.length - 1; i++){
if(arr[i] > arr[i + 1]){ diff_count += 1; } } if(diff_count > 1){ return false; } else{ return true; } }
//Write a function that accepts an array of strings as a parameter, // deletes the strings that have odd lengths from it, // and returns the resulted array with a sorted order, // The array is always an array of strings and never an array of numbers, // and it may contain duplicates. // The order of the array should be...
var result = [];
for(var i = 0; i < lst.length; i++){ if(lst[i].length % 2 == 0){ result.push(lst[i]); } } return result.sort(function(a, b){ if(a.length < b.length){ return -1; } else if(a.length > b.length){ return 1; } else{ ...
from typing import List def sort_even(l: List[int]) -> List[int]: """This function takes a list l and returns a list l' such that l' is identical to l in the odd indicies, while its values at the even indicies are equal to the values of the even indicies of l, but sorted. >>> sort_even([1, 2, 3]) [...
return l