Created
June 4, 2013 23:26
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Factorial call tree
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| def factorial num | |
| if num == 1 | |
| return 1 | |
| else | |
| return num * factorial(num-1) | |
| end | |
| end | |
| factorial(5) | |
| 5 * factorial(4) | |
| 5 * (4 * factorial(3)) | |
| .... | |
| 5 * (4 * (3 * (2 * (factorial(1))))) | |
| 5 * (4 * (3 * (2 * (1)))) | |
| 5 * (4 * (3 * (2)))) | |
| 5 * (4 * (6)) | |
| 5 * 24 | |
| 120 |
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