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Remove Element

2015-12-20 21:58 225 查看
package cn.edu.xidian.sselab.array;

/**
*
* @author zhiyong wang
* title:Remove Element
* content:
* Given an array and a value, remove all instances of that value in place and return the new length.
* The order of elements can be changed. It doesn't matter what you leave beyond the new length.
*
*/
public class RemoveElement {

//这个题与MoveZeroes是相同的思路,MoveZeroes是将所有的0移动到数组的最后面,
//而本题目是将val值全被替换掉,此时的val换成0,就跟MoveZeroes是完全一样的题目了
public int removeElement(int[] nums, int val){
int length = nums.length;
int count = 0;
for(int i=0;i<length;i++){
if(nums[i] == val){
count++;
}else{
nums[i-count] = nums[i];
}
}
return length - count;
}
}

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