fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. vector<int> moveZeros(int n, vector<int> a) {
  5.     int j = -1;
  6.     //place the pointer j:
  7.     for (int i = 0; i < n; i++) {
  8.         if (a[i] == 0) {
  9.             j = i;
  10.             break;
  11.         }
  12.     }
  13.  
  14.     //no non-zero elements:
  15.     if (j == -1) return a;
  16.  
  17.     //Move the pointers i and j
  18.     //and swap accordingly:
  19.     for (int i = j + 1; i < n; i++) {
  20.         if (a[i] != 0) {
  21.             swap(a[i], a[j]);
  22.             j++;
  23.         }
  24.     }
  25.     return a;
  26. }
  27.  
  28.  
  29. int main()
  30. {
  31.     vector<int> arr = {1, 0, 2, 3, 2, 0, 0, 4, 5, 1};
  32.     int n = 10;
  33.     vector<int> ans = moveZeros(n, arr);
  34.     for (auto &it : ans) {
  35.         cout << it << " ";
  36.     }
  37.     cout << '\n';
  38.     return 0;
  39. }
  40.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1 2 3 2 4 5 1 0 0 0
https://ideone.com/OKXvCI
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!