Leetcode Two Sum Problem in three different languages
The problem from Leetcode.com: Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You can return the answer in any order. Example: Input: nums = [2,7,11,15], target = 9 Output: [0,1] Explanation: Because nums[0] + nums[1] == 9, we return [0, 1]. First, let's attack this using Python, and then we'll do the same with Java and compare the differences in the solutions. PYTHON Problem-solving: We can solve this problem by using a hash table in Python. First, we will iterate over the array nums and check if the difference between the target and the current element of nums exists in the hash table. If it does, we return the indices of the current element and the difference. Otherwise, we add the current element of nums and its index to the hash table. Steps: Initialize an empty hash table. Loo...