LeetCode – Search in Rotated Sorted Array (Java)
Suppose a sorted array 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.
Java Solution 1 Recusive
public int search(int[] nums, int target) { return binarySearch(nums, 0, nums.length1, target); } public int binarySearch(int[] nums, int left, int right, int target){ if(left>right) return 1; int mid = left + (rightleft)/2; if(target == nums[mid]) return mid; if(nums[left] <= nums[mid]){ if(nums[left]<=target && target<nums[mid]){ return binarySearch(nums,left, mid1, target); }else{ return binarySearch(nums, mid+1, right, target); } }else { if(nums[mid]<target&& target<=nums[right]){ return binarySearch(nums,mid+1, right, target); }else{ return binarySearch(nums, left, mid1, target); } } } 
Java Solution 2  Iterative
public int search(int[] nums, int target) { int left = 0; int right= nums.length1; while(left<=right){ int mid = left + (rightleft)/2; if(target==nums[mid]) return mid; if(nums[left]<=nums[mid]){ if(nums[left]<=target&& target<nums[mid]){ right=mid1; }else{ left=mid+1; } }else{ if(nums[mid]<target&& target<=nums[right]){ left=mid+1; }else{ right=mid1; } } } return 1; } 
<pre><code> String foo = "bar"; </code></pre>

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