Given `nums` and `target`, return indices of two distinct numbers that add up to `target`. Exactly one solution exists. Variant **#55**.
Example 1
Input: nums = [15,16,37,8,19,30,1,12,23,34,5,16,27,38,9,20,31,2,37], target = 53
Output: [0,13]
nums[0] + nums[13] = 53
Constraints
Acceptance: 66% · Topics: array, hash-table