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Variable Switch
| Category: | Logic |
| Submitted By: | rob77 |
| Fun: |  (1.86) |
| Difficulty: | (2.22) |
You're a computer programmer, and the program you're writing has numeric variables A and B. You need the computer to switch the variables so that the number in variable A becomes variable B, and the number in variable B becomes variable A. Adding a third variable would use more memory though, so how can you do that switch without using another variable? Use commands such as B=B-A to assign a new value to B.
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