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  1. #include <iostream>
  2. #include <vector>
  3. #include <math.h>
  4. using namespace std;
  5.  
  6.  
  7. vector<int> decimalToBinary(int n){
  8.     long long ans = 0;
  9.     int remainder, i = 1;
  10. 	vector<int> v;
  11.     // Until the value of n becomes 0.
  12.     while(n!=0){
  13.         remainder = n % 2;
  14.         //ans += remainder*i;
  15.         v.insert(v.begin(),remainder);
  16.         i = i * 10;
  17.         n = n / 2;
  18. }
  19.  
  20.     return v;
  21.     }
  22.  
  23. int main() {
  24.     int n1 = 156;
  25.     int n2 = 253;
  26.     int n3 = log2(n2-n1);
  27.     cout<<n3;
  28.     vector<int> bin = decimalToBinary(n2);
  29.  
  30.     int i =0;
  31. 	for ( auto x = bin.end(); x != bin.begin(); x--){
  32. 		if (i<n3)
  33. 		{
  34. 		cout << "1"	;
  35. 		}
  36. 		else
  37. 		{
  38. 		cout<< *x;
  39. 		}
  40. 		i++;
  41. 	}
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0.01s 5452KB
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stdin
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Standard input is empty
stdout
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611111111
https://ideone.com/w4jqZb
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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