fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int upperBound(vector<int> &arr, int x, int n) {
  5.     int low = 0, high = n - 1;
  6.     int ans = n;
  7.  
  8.     while (low <= high) {
  9.         int mid = (low + high) / 2;
  10.         if (arr[mid] > x) {
  11.             ans = mid;
  12.             high = mid - 1;
  13.         }
  14.         else {
  15.             low = mid + 1;
  16.         }
  17.     }
  18.     return ans;
  19. }
  20.  
  21. int main()
  22. {
  23.     vector<int> arr = {3, 5, 8, 9, 15, 19};
  24.     int n = 6, x = 9;
  25.     int ind = upperBound(arr, x, n);
  26.     cout << "The upper bound is the index: " << ind << "\n";
  27.     return 0;
  28. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
The upper bound is the index: 4
https://ideone.com/rd8IHb
language:
C++ (gcc 8.3)
created:
12 hours 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!