Created
November 11, 2013 04:38
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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. |
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public class Solution { | |
public boolean search(int[] A, int target) { | |
// IMPORTANT: Please reset any member data you declared, as | |
// the same Solution instance will be reused for each test case. | |
return search(A, target, 0, A.length - 1); | |
} | |
public boolean search(int[] A, int target, int begin, int end){ | |
if(begin > end) return false; | |
int midle = (begin + end) / 2; | |
if(target == A[midle]) return true; | |
if(A[midle] == A[begin] && A[midle] == A[end]){ | |
return search(A, target, midle + 1, end) || | |
search(A, target, begin, midle - 1); | |
} | |
if(A[midle] >= A[begin]){ | |
if(target < A[midle]){ | |
if(target >= A[begin]) | |
return search(A, target, begin, midle - 1); | |
else return search(A, target, midle + 1, end); | |
} | |
else return search(A, target, midle + 1, end); | |
} | |
else{ | |
if(target < A[midle]) | |
return search(A, target, begin, midle - 1); | |
else{ | |
if(target >= A[begin]) | |
return search(A, target, begin, midle - 1); | |
else return search(A, target, midle + 1, end); | |
} | |
} | |
} | |
} |
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