The conversation between human and AI assistant.
[|Human|] Reverse engineer this algorithm.
[|AI|] This algorithm is an implementation of the Insertion Sort sorting algorithm. It sorts an input array A of N integers by iterating through each element from index i = 2 to the end of the array (N). For each element, the algorithm compares it to the one before it (A[j] to A[j-1]) and if A[j] is smaller than A[j-1], the two values are swapped. This process continues until either the beginning of the array is reached, or A[j] is greater than or equal to A[j-1]. Once the inner loop is finished for the current value of i, the array is guaranteed to be sorted up to index i. The end result is a sorted array from smallest to largest.
[|Human|] 
Reverse engineer this algorithm.