Solving Combinations in go. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

Example:

Input: n = 4, k = 2
Output:
[
  [2,4],
  [3,4],
  [2,3],
  [1,2],
  [1,3],
  [1,4],
]

See the full details of the problem Combinations at LeetCode

Originally posted at: @github.com/halfrost/LeetCode-Go