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MoveZeroes.java
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40 lines (35 loc) · 915 Bytes
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class Solution {
/**
* 两次遍历，第一次将所有非0元素往前移动，第二次将后面的数据补0
*
* @param nums
*/
public void moveZeroes(int[] nums) {
int startIndex = 0;
for (int i = 0; i < nums.length; i++) {
if (nums[i] != 0) {
nums[startIndex++] = nums[i];
}
}
for (int i = startIndex; i < nums.length; i++) {
nums[i] = 0;
}
}
/**
* 一次遍历
*
* @param nums
*/
public void moveZeroes1(int[] nums) {
int firstZeroIndex = 0;
for (int i = 0; i < nums.length; i++) {
if (nums[i] != 0) {
//swap num
int temp = nums[firstZeroIndex];
nums[firstZeroIndex] = nums[i];
nums[i] = temp;
firstZeroIndex++;
}
}
}
}