reverse_bits

Your mission

Write a function that mirrors all 8 bits of an unsigned byte and returns the result.

See it in action

reverse_bits(2)

Expected result

Your checklist

For your own tracking. Tests grade your code.

Swap each bit at position i with the bit at position 7-i.
This means bit 0 swaps with bit 7, bit 1 swaps with bit 6, bit 2 swaps with bit 5, and bit 3 swaps with bit 4.
For example, 0b00001100 (12) becomes 0b00110000 (48).

More examples

reverse_bits(170)

Expected result

Constraints

Expected files

reverse_bits.c

Allowed functions

None. Write every helper yourself.

reverse_bits

Bits and representation

Your mission

Write a function that mirrors all 8 bits of an unsigned byte and returns the result.

See it in action

reverse_bits(2)

Expected result

Your checklist

For your own tracking. Tests grade your code.

Swap each bit at position i with the bit at position 7-i.
This means bit 0 swaps with bit 7, bit 1 swaps with bit 6, bit 2 swaps with bit 5, and bit 3 swaps with bit 4.
For example, 0b00001100 (12) becomes 0b00110000 (48).

More examples

reverse_bits(170)

Expected result

Constraints

Expected files

reverse_bits.c

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01All bits zero stays zeroWaiting

02All bits set stays all bits setWaiting

03Least-significant bit moves to position 7Waiting

04Bit 1 moves to position 6Waiting

05Alternating pattern 10101010 mirrors to 01010101Waiting

06Lower nibble bits 2-3 shift to positions 4-5Waiting

reverse_bits

Your mission

Write a function that mirrors all 8 bits of an unsigned byte and returns the result.

See it in action

reverse_bits(2)

Expected result

Your checklist

For your own tracking. Tests grade your code.

Swap each bit at position i with the bit at position 7-i.
This means bit 0 swaps with bit 7, bit 1 swaps with bit 6, bit 2 swaps with bit 5, and bit 3 swaps with bit 4.
For example, 0b00001100 (12) becomes 0b00110000 (48).

More examples

reverse_bits(170)

Expected result

Constraints

Expected files

reverse_bits.c

Allowed functions

None. Write every helper yourself.

reverse_bits

Bits and representation

Your mission

Write a function that mirrors all 8 bits of an unsigned byte and returns the result.

See it in action

reverse_bits(2)

Expected result

Your checklist

For your own tracking. Tests grade your code.

Swap each bit at position i with the bit at position 7-i.
This means bit 0 swaps with bit 7, bit 1 swaps with bit 6, bit 2 swaps with bit 5, and bit 3 swaps with bit 4.
For example, 0b00001100 (12) becomes 0b00110000 (48).

More examples

reverse_bits(170)

Expected result

Constraints

Expected files

reverse_bits.c

Allowed functions

None. Write every helper yourself.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01All bits zero stays zeroWaiting

02All bits set stays all bits setWaiting

03Least-significant bit moves to position 7Waiting

04Bit 1 moves to position 6Waiting

05Alternating pattern 10101010 mirrors to 01010101Waiting

06Lower nibble bits 2-3 shift to positions 4-5Waiting