Two Sum
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.
Examples
Example 1
Input: nums = [2,7,11,15], target = 9
Output: [0,1]
Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].
Example 2
Input: nums = [3,2,4], target = 6
Output: [1,2]
Constraints
- ·2 ≤ nums.length ≤ 10⁴
- ·-10⁹ ≤ nums[i] ≤ 10⁹
- ·Only one valid answer exists.
solution.py
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