Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
Input: n = 4, k = 2 Output: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ]
g++ 6.3 using the latest C++ 14 standard.
Your code is compiled with level one optimization (
-O1). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.