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推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here’s your problem today. This problem was recently asked by Twitter:

Given a 32-bit integer, swap the 1st and 2nd bit, 3rd and 4th bit, up til the 31st and 32nd bit.

Here’s some starting code and an example:

def swap_bits(num):
  # Fill this in.

# 0b01010101010101010101010101010101