Description
Problem
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
Examples
Example 1:
Input: nums = [2,7,11,15], target = 9Output: [0,1]Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].
Example 2:
Input: nums = [3,2,4], target = 6Output: [1,2]Explanation: Because nums[1] + nums[2] == 6, we return [1, 2].
Constraints
2 ≤ nums.length ≤ 10⁴-10⁹ ≤ nums[i] ≤ 10⁹-10⁹ ≤ target ≤ 10⁹Only one valid answer exists.
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