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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. vector<int>v={1,2,4,4,5};
  5.  
  6. void lb(int num){
  7. 	int l = 0;
  8.     int r = v.size()-1;
  9.     while(l<=r){
  10.         int mid = l + (r-l)/2;
  11.         if(v[mid]<num) l=mid+1;
  12.         else r=mid-1;
  13.     }
  14.     cout<<l<<endl;
  15. }
  16.  
  17. int main() {
  18. 	lb(3); //if number is not present
  19. 	lb(4); //if number is present
  20. 	lb(7); //if number if bigger than max
  21. 	return 0;
  22. }
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/M5w7iu
Lower Bound
language:
C++14 (gcc 8.3)
created:
16 days ago
visibility:
public

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