Day 19 of 30-Day LeetCode Challenge

Aanchal Patial
1 min readApr 19, 2020

Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.

(i.e., [0,1,2,4,5,6,7] might become [4,5,6,7,0,1,2]).

You are given a target value to search. If found in the array return its index, otherwise return -1.

You may assume no duplicate exists in the array.

Your algorithm’s runtime complexity must be in the order of O(log n)

HINT : Since we need search time to be O(logn) the obvious hint is to somehow use binary search.

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Aanchal Patial

We never really grow up, we only learn how to act in public