Given `nums` and `target`, return indices of two distinct numbers that add up to `target`. Exactly one solution exists. Variant **#52**.
Example 1
Input: nums = [12,7,34,5,16,27,38,9,20,31,2,13,24,35,6,16], target = 23
Output: [1,4]
nums[1] + nums[4] = 23
Constraints
Acceptance: 63% · Topics: array, hash-table