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Create Find the Duplicate Number.java #94

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Oct 20, 2020
Merged

Create Find the Duplicate Number.java #94

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24 changes: 24 additions & 0 deletions Problem Solving/Find the Duplicate Number.java
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Original file line number Diff line number Diff line change
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/**
* Solution to Find the Duplicate Number at LeetCode in Java
*
* author: hellache
* ref: https://leetcode.com/problems/find-the-duplicate-number/
*/
class Solution {
public int findDuplicate(int[] nums) {
int p1=nums[0];
int p2=nums[0];
p1=nums[p1];
p2=nums[nums[p2]];
while(p1!=p2){
p1=nums[p1];
p2=nums[nums[p2]];
}
p1=nums[0];
while(p1!=p2){
p1=nums[p1];
p2=nums[p2];
}
return p1;
}
}