Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    // EXTRACT 2 BIT VALUES 
    int index = 0; 
    uint8_t result = 0; 
    while (val)
    {

        result |= (val & 1) << index;
        val >>= 2; 
        index ++ ; 
    }
    return result;
}

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

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

Solving Approach