Interview Cake The NOT bitwise operation inverts bits. A 0 becomes a 1. A 1 becomes a 0.
The NOT operator is often written as a tilde character ("~"):
When numbers are printed in base-10, the result of a NOT operation can be surprising. In particular, positive numbers can become negative and negative numbers can become positive. For example:
This is because numbers are (usually) represented using two's complement, where the leftmost bit is actually negative. So flipping the leftmost bit usually flips the sign of the number.
Interview coming up?
Get the free 7-day email crash course. You'll learn how to think algorithmically, so you can break down tricky coding interview questions.
No prior computer science training necessary—we'll get you up to speed quickly, skipping all the overly academic stuff.
No spam. One-click unsubscribe whenever.
You're in! Head over to your email inbox right now to read day one!
