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26 lines (25 loc) · 771 Bytes
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Copy pathSolution.java
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26 lines (25 loc) · 771 Bytes
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package leetcode._26_;
class Solution {
public int removeDuplicates(int[] nums) {
if (nums.length == 0) {
return 0;
}
int len = 1;
int emptyIndex = -1; // 可以放下一个元素的位置
for (int i = 0; i < nums.length - 1; i++) {
if (nums[i] == nums[i + 1] && emptyIndex == -1) {
emptyIndex = i + 1;
}
// if (i + 2 == nums.length && emptyIndex == -1){ // 表示全部不重复
// return nums.length;
// }
if (nums[i] != nums[i + 1]) {
len++;
if (emptyIndex!=-1) {
nums[emptyIndex++] = nums[i + 1];
}
}
}
return len;
}
}