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suggested way of calculating the number of files
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| Lab exam for calculating the number of files and folders in a file system | |
| http://sourcemaking.com/design_patterns/Composite/java/1 | |
| interface FileComponent | |
| + calculateTotal(); | |
| FileComposite | |
| + calculateTotal() | |
| for item in composite | |
| total += leaf.calculateTotal(); | |
| FileLeaf | |
| + calculateTotal() | |
| return 1; |
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