(This question has been seen in the interviews of the following companies: Google)
Given an array return an integer indicating the minimum number of swap operations required to sort the array into ascending order.
Example 1:
Input: [5, 1, 3, 2]
Output: 2
Explanation: [5, 1, 3, 2] -> [2, 1, 3, 5] -> [1, 2, 3, 5]
Example 2:
Input: [1, 3, 2]
Output: 1
Explanation: [1, 3, 2] -> [1, 2, 3]
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