Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    uint8_t result = 0;
    for(int i=0 ; i<8 ; i++){
        uint8_t bit = (val >> (i * 2)) & 0x01;
        result |= (bit << i);
    }
    return result;
}

int main() {
    uint16_t val;
    // Input ví dụ: 20548 (0101000001000100) -> Output: 202
    if (scanf("%hu", &val) == 1) {
        uint8_t result = compress_bits(val);
        printf("%u\n", result);
    }
    return 0;
}

Solving Approach