Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    int i,j;
    uint8_t ans=0;
    uint16_t ex;
    for(i=0;i<16;i=i+2){
        ex = val & 0x01<<i;
        if(ex) ans |= 0x01<<j;
        j++;
    }
    return ans;
}

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

    uint8_t result = compress_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach