# Next higher number with same number of set bits in C++

C++Server Side ProgrammingProgramming

In this tutorial, we are going to write a program that finds the next greater integer having one more number of set bits.

Let's see the steps to solve the problem.

• Initialise the number n.

• Write a function get the count of number of set bits.

• Initialise the iterative variable with n + 1.

• Write an infinite loop.

• Check for the number of set bits for numbers equal to the number of set bits of n.

• Return the number when you find it.

## Example

Let's see the code.

Live Demo

#include <bits/stdc++.h>
using namespace std;
int getSetBitsCount(int n) {
int count = 0;
while (n) {
if (n % 2 == 1) {
count += 1;
}
n /= 2;
}
return count;
}
int getNextGreaterElementWithSameSetBits(int n) {
int setBitsCount = getSetBitsCount(n);
int i = n + 1;
while (true) {
if (setBitsCount == getSetBitsCount(i)) {
return i;
}
i += 1;
}
}
int main() {
int n = 124;
cout << getNextGreaterElementWithSameSetBits(n) << endl;
return 0;
}

## Output

If you run the above code, then you will get the following result.

143

## Conclusion

If you have any queries in the tutorial, mention them in the comment section.

Published on 01-Jul-2021 06:09:18