Follow up for "Search in Rotated Sorted Array":
What if duplicates are allowed?
Would this affect the run-time complexity? How and why?
Write a function to determine if a given target is in the array.
public class Solution { public boolean search(int[] nums, int target) { int start = 0; int end = nums.length-1; return search(nums, target, start, end); } private boolean search(int[] nums, int target, int start, int end) { if (start>end) { return false; } int mid = (start+end)/2; if (target == nums[mid]) { return true; } if (nums[mid] == nums[end]) { return search(nums, target, start, mid-1) || search(nums, target, mid+1, end); } else if (nums[mid] > nums[end]) { if (target<nums[mid] && target>=nums[start]) { return search(nums, target, start, mid-1); } else { return search(nums, target, mid+1, end); } } else { if (target>nums[mid] && target<=nums[end]) { return search(nums, target, mid+1, end); } else { return search(nums, target, start, mid-1); } } } }
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