Keep Only the Highest Set Bit

Code

#include <stdio.h>
#include <stdint.h>

// Complete the function
uint16_t highest_set_bit(uint16_t reg) {
    for(int  i = 15 ; i >=0 ; i--){
        if(reg >> i & 1){
            for(int j = i-1 ; j >= 0 ; j --){
                reg &= ~(1 << j);
            }
            return reg;
        }
    }
    return reg;
    // Your logic here
}

int main() {
    uint16_t reg;
    scanf("%hu", &reg);

    uint16_t result = highest_set_bit(reg);
    printf("%hu", result);
    return 0;
}

Solving Approach

 

 

 

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Input

44

Expected Output

32