KwickClips Java · 44 sec · free
Why is 6 & 3 equal to 2?
Short answer. In binary, & keeps a 1 only where both numbers have a 1: 110 & 011 is 010.
What does 6 << 1 give?
12, because a left shift by one doubles the number.
Bit by bit
| Number | Binary |
|---|---|
| 6 | 110 |
| 3 | 011 |
| 6 & 3 | 010 = 2 |
Remember
| & works on bits |
| << 1 doubles, >> 1 halves |
Six and three gives two. Not nine. Why? Write both in binary. Six is one one zero. Three is zero one one. AND keeps ones only where both have one. Ampersand works on bits. Shift left doubles. Shift right halves.
This clip is from the full lesson: Java Operators, Precedence and Expressions — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Information Technology (802), CBSE Class 12 Information Technology (802), ICSE Class 9 Computer Applications, ICSE Class 9 Computer Applications
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