Show that after one iteration of the loop, if a [ m i d ] ≠ x , the input to the next iteration is an array of length at most ⌊ k / 2 ⌋ .

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Chapter 11.5, Problem 18ES

To determine

Show that after one iteration of the loop, if a[mid]≠x, the input to the next iteration is an array of length at most ⌊k/2⌋.

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