
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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int[][] permutation(int[] arr);
Implement this method in Java to permute the elments of an array using the following steps:
Step 1:
create a array named result that's n! in size
This will be a two-dimensional array.
int[][] foo = new int[6][];
The code above Will allocate an array of 6 int arrays.
Step 2:
if the size of the input array, arr, is 1, insert it into result at index zero, then return from the function.
Step 3:
for each element i of the array arr, create a smaller array, sm, with that element removed.
Step 4:
For each array in the smaller array, append arr[i], and put the return value in result.
Step 5: return the result
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