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Just think for it using disjoint cycles of the given permutation
- mohammad.i.kotb January 03, 2013For example if N = 5, and given a permutation (3, 4, 1, 5, 2) and want to sort it
Then you have 2 disjoint cycles in this permutation
1st: 3 --> 1 --> 3
2nd: 4 --> 5 --> 2 --> 4
(generate these cycles using the index of every number, 3 will point to the 3rd place in the permutation which is 1 and 1 will show to the 1st place which is 3)
Then given these disjoint cycles, just rotate them till they are all adjusted.