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What are the difference in the passing mechanism of the following arrays void foo(int* a) void foo(int(&a) [10]) void foo(int a[]) and if all the three absolutely does the same thing then what is the point of keeping 3 of them and does any method have any performance gain as …
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What would be the best possible algorithm for finding out all the combinations a given string can be rearranged. It should even consider cases for repeated characters Any other strategy than brute force would be appreciated 
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