Question

Write a mips assembly language program that asks the user to enter an unsigned number and read it. Then swap the bits at odd positions with those at even positions and display the resulting number.

For example, if the user enters the number 9, which has binary representation of 1001, then bit 0 is swapped with bit 1, and bit 2 is swapped with bit 3, resulting in the binary number 0110. Thus, the program should display 6.

Answer 1

#Using Python Program
def swapBits(x):
    # Get all even bits of x
    even_bits = x & 0xAAAAAAAA

    # Get all odd bits of x
    odd_bits = x & 0x55555555

    # Right shift even bits
    even_bits >>= 1

    # Left shift odd bits
    odd_bits <<= 1

    # Combine even and odd bits
    return (even_bits | odd_bits)


# Driver program
# 1001
x = 9

# Output is 6 (1001)
print(swapBits(x))