Give it an input and say what you think comes back. It compiles and runs for real, so a wrong guess still shows you the answer — probe as much as you like. Only correct predictions count.
Locked until you have predicted 4 outputs correctly.
| 1 | vector<int> solution(const vector<int>& nums) { |
| 2 | int n = nums.size(); |
| 3 | vector<int> out(n, 1); |
| 4 | int running = 1; |
| 5 | for (int i = 0; i < n; i++) { |
| 6 | out[i] = running; |
| 7 | running = running * nums[i]; |
| 8 | } |
| 9 | running = 1; |
| 10 | for (int i = n - 1; i >= 0; i--) { |
| 11 | out[i] = out[i] * running; |
| 12 | running = running * nums[i]; |
| 13 | } |
| 14 | return out; |
| 15 | } |
Names have been stripped. The signature is the only clue you get for free. Compiled as C++20 with the standard headers and using namespace std; already in scope.