Given `nums` and `target`, return indices of two distinct numbers that add up to `target`. Exactly one solution exists. Variant **#25**.
Example 1
Input: nums = [25,26,7,18,29,0,11,22,27], target = 53
Output: [1,8]
nums[1] + nums[8] = 53
Constraints
Acceptance: 70% · Topics: array, hash-table