import streamlit as st

description1 = "Given two integer numbers, return their product only if the product is equal to or lower than 1000. Otherwise, return their sum."
description2 = "Iterate the first 10 numbers, and in each iteration, returns the sum of the current and previous number."
description3 = "Display characters that are present at an even index number from the provided string."
description4 = "Remove the characters from a string starting from zero up to n and returns a new string."
description5 = "Returns the number of times a substring is present in the provided string."
description6 = "Checks if a number is Palindrom or Not."
description7 = "Given two list of numbers, returns a new list such that the new list contains odd numbers from the first list and even numbers from the second list."
description8 = "Returns multiplication table of the provided number range."
description9 = "Returns an integer value of base raises to the power of exponent."

def sum_of_two(a,b):
    prod = a*b
    sum1 = a+b
    if prod <= 1000 :
        return(prod)
    else:
        return(sum1)

def start_iteration(a):
    num_set = '''
                Showning current and previous number sum in a range(10): \n'''
    temp = a
    for i in range(a,a+10):
        if temp == a:
            num_set = num_set +f''' 
            Current Number {temp} Previous Number 0 Sum: {temp} '''
        else:
            num_set = num_set + f''' 
            Current Number {temp} Previous Number {temp-1} Sum: {temp+temp-1} '''
        temp = temp + 1
    return(num_set)

def even_index(str1):
    str_lst = []
    for i in range(len(str1)):
        if i % 2 == 0 :
           str_lst.append(str1[i]) 
    return(str_lst)

def change_str(str2,num2):
    new_srt = ""
    for i in range(num2,len(str2)):
        new_srt = new_srt + str2[i]
    return new_srt

def str_count(str3,sub_str):
    new_str3 = str3.lower()
    new_sub_str = sub_str.lower()
    x = new_str3.count(new_sub_str)
    return x

def check_palin(check_num):
    num_str = str(check_num)
    if num_str == num_str[::-1] :
        return("Palindrom")
    else:
        return("Not Palindrom")

def create_new(num_str1,num_str2):
    fin_lst = []
    num_lst1 = num_str1.split()
    num_lst2 = num_str2.split()
    for x in num_lst1:
        if int(x) % 2 == 1:
            fin_lst.append(int(x))
    for y in num_lst2:
        if int(y) % 2 == 0:
            fin_lst.append(int(y))
    return(fin_lst)

def create_tbl(tbl1,tbl2):
    list_of_tbl = []
    if tbl1<tbl2:
        for i in range(tbl1,tbl2+1):
            table_lst = []
            for j in range(1,11):
                table_lst.append(j*i)
            list_of_tbl.append(table_lst)
        return(list_of_tbl)
    elif tbl2<tbl1:
        for i in range(tbl2,tbl1+1):
            table_lst = []
            for j in range(1,11):
                table_lst.append(j*i)
            list_of_tbl.append(table_lst)
        return(list_of_tbl)
    else:
        for j in range(1,11):
            list_of_tbl.append(tbl2*j)
        return(list_of_tbl)
        

def find_exp(base1,exp1):
    if exp1 < 0 :
        exp1 = exp1 * (-1)
    return base1**exp1
    

st.markdown("<h3 style='text-align:center; font-size:24px;'>Mathematical and String Operations</h3>", unsafe_allow_html=True)
st.write("---")
radio_bar = st.sidebar.radio(options=[description1, description2, description3, description4, description5, description6, description7, description8, description9], label="Select from the below mentioned operations:")
if radio_bar == description1:
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description1+"</h6>", unsafe_allow_html=True)
    first_num = st.number_input(label="Enter First Number:",value=0)
    second_num = st.number_input(label="Enter Second Number:",value=0)
    all_data = st.button("Calculate result")
    if all_data:
        result = sum_of_two(first_num,second_num)
        st.success(result)

if radio_bar == description2 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description2+"</h6>", unsafe_allow_html=True)
    first_num = st.number_input(label="Enter Starting Number:",value=0)
    all_data = st.button("Show result")
    if all_data:
        result = start_iteration(first_num)
        st.success(result)

if radio_bar == description3 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description3+"</h6>", unsafe_allow_html=True)
    str1 = st.text_input(label="Enter the string:",value="")
    all_data = st.button("Show result")
    if all_data:
        result = even_index(str1)
        st.success(result)

if radio_bar == description4 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description4+"</h6>", unsafe_allow_html=True)
    str2 = st.text_input(label="Enter the string:",value="")
    char_num = st.number_input(label="Number of characters to remove:",value=0)
    all_data = st.button("Show result")
    if all_data:
        result = change_str(str2,char_num)
        st.success(result)

if radio_bar == description5 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description5+"</h6>", unsafe_allow_html=True)
    str3 = st.text_input(label="Enter the string:",value="")
    sub_str= st.text_input(label="Enter the sub-string:",value="")
    all_data = st.button("Show result")
    if all_data:
        result = str_count(str3,sub_str)
        st.success(f"The sub-string is present {result} times in the string.")

if radio_bar == description6 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description6+"</h6>", unsafe_allow_html=True)
    check_num = st.number_input(label="Enter Number:",value=0)
    all_data = st.button("Check")
    if all_data:
        result = check_palin(check_num)
        st.success(result)

if radio_bar == description7 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description7+"</h6>", unsafe_allow_html=True)
    num_str1 = st.text_input(label="Enter the numbers of first list and separate each number by single space(' '):",value=0)
    num_str2 = st.text_input(label="Enter the numbers of second list and separate each number by single space(' '):",value=0)
    all_data = st.button("Show Result")
    if all_data:
        result = create_new(num_str1,num_str2)
        st.success(result)

if radio_bar == description8 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description8+"</h6>", unsafe_allow_html=True)
    start_num8 = st.number_input(label="Enter start Number:",value=0)
    end_num8 = st.number_input(label="Enter end Number:",value=0)
    all_data = st.button("Show Result")
    if all_data:
        result = create_tbl(start_num8,end_num8)
        st.success(result)

if radio_bar == description9 :
    st.markdown("<h6 style='text-align:center; font-size:16px;'>"+description9+"</h6>", unsafe_allow_html=True)
    base_num = st.number_input(label="Enter Base Number:",value=0)
    exp_num = st.number_input(label="Enter Exponent:",value=0)
    all_data = st.button("Calculate")
    if all_data:
        result = find_exp(base_num,exp_num)
        st.success(result)