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Two Sum

EasyP1Coding

Given an array of integers nums and an integer target, return the indices of the two numbers that add up to target.

Each input has exactly one solution, and you may not use the same element twice. Return the two indices in increasing order.

Example 1

Input
nums = [2,7,11,15], target = 9
Output
[0,1]
Why
nums[0] + nums[1] = 2 + 7 = 9.

Example 2

Input
nums = [3,2,4], target = 6
Output
[1,2]

Example 3

Input
nums = [3,3], target = 6
Output
[0,1]

Constraints

  • 2 <= nums.length <= 10^4
  • -10^9 <= nums[i] <= 10^9
  • -10^9 <= target <= 10^9
  • Exactly one valid answer exists.

Hints

Run checks the 3 visible tests, Submit all 8.