| { |
| "id": 2388, |
| "name": "replace_elements_in_an_array", |
| "difficulty": "Medium", |
| "link": "https://leetcode.com/problems/replace-elements-in-an-array/", |
| "date": "1653782400000", |
| "task_description": "You are given a **0-indexed** array `nums` that consists of `n` **distinct** positive integers. Apply `m` operations to this array, where in the `ith` operation you replace the number `operations[i][0]` with `operations[i][1]`. It is guaranteed that in the `ith` operation: `operations[i][0]` **exists** in `nums`. `operations[i][1]` does **not** exist in `nums`. Return _the array obtained after applying all the operations_. **Example 1:** ``` **Input:** nums = [1,2,4,6], operations = [[1,3],[4,7],[6,1]] **Output:** [3,2,7,1] **Explanation:** We perform the following operations on nums: - Replace the number 1 with 3. nums becomes [**3**,2,4,6]. - Replace the number 4 with 7. nums becomes [3,2,**7**,6]. - Replace the number 6 with 1. nums becomes [3,2,7,**1**]. We return the final array [3,2,7,1]. ``` **Example 2:** ``` **Input:** nums = [1,2], operations = [[1,3],[2,1],[3,2]] **Output:** [2,1] **Explanation:** We perform the following operations to nums: - Replace the number 1 with 3. nums becomes [**3**,2]. - Replace the number 2 with 1. nums becomes [3,**1**]. - Replace the number 3 with 2. nums becomes [**2**,1]. We return the array [2,1]. ``` **Constraints:** `n == nums.length` `m == operations.length` `1 <= n, m <= 105` All the values of `nums` are **distinct**. `operations[i].length == 2` `1 <= nums[i], operations[i][0], operations[i][1] <= 106` `operations[i][0]` will exist in `nums` when applying the `ith` operation. `operations[i][1]` will not exist in `nums` when applying the `ith` operation.", |
| "public_test_cases": [ |
| { |
| "label": "Example 1", |
| "input": "nums = [1,2,4,6], operations = [[1,3],[4,7],[6,1]]", |
| "output": "[3,2,7,1] " |
| }, |
| { |
| "label": "Example 2", |
| "input": "nums = [1,2], operations = [[1,3],[2,1],[3,2]]", |
| "output": "[2,1] " |
| } |
| ], |
| "private_test_cases": [], |
| "haskell_template": "arrayChange :: [Int] -> [[Int]] -> [Int]\narrayChange nums operations ", |
| "ocaml_template": "let arrayChange (nums: int list) (operations: int list list) : int list = ", |
| "scala_template": "def arrayChange(nums: List[Int],operations: List[List[Int]]): List[Int] = { \n \n}", |
| "java_template": "public static List<Integer> arrayChange(List<Integer> nums, List<List<Integer>> operations) {\n\n}", |
| "python_template": "class Solution(object):\n def arrayChange(self, nums, operations):\n \"\"\"\n :type nums: List[int]\n :type operations: List[List[int]]\n :rtype: List[int]\n \"\"\"\n " |
| } |
