Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    uint8_t result = 0;
    uint16_t mask = 0x5555;
    uint16_t even_bit_values = mask & val;
    for(int i =0;i<8;++i){
        result|=(even_bit_values >> (2*i) &1)<<i;
    }
    return result;
}

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

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

Solving Approach