Question: Given a sorted array of n distinct integers A[1], A[2], , A[n], describe an O(log n) algorithm to find out whether there is an index

Given a sorted array of n distinct integers A[1], A[2], , A[n], describe an O(log n) algorithm to find out whether there is an index i such that A[i] = i. Why does your algorithm run in the claimed time bound?

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