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02:07

Two Sum

Easy

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].
def twoSum(nums, target):
    map = {}
    
    for i in range(len(nums)):
        complement = target - nums[i]
        
        if complement in map:
            return [map[complement], i]
        
        map[nums[i]] = i
    
    return []

Test Cases

Test Case 1
Passed
Input: [2,7,11,15], 9
Expected: [0,1]
Test Case 2
Passed
Input: [3,2,4], 6
Expected: [1,2]
Test Case 3
Running
Input: [3,3], 6
Expected: [0,1]