LeetCode 26 Remove Duplicates from Sorted Array (移除有序数组中重复数字)

题目链接: https://leetcode.com/problems/remove-duplicates-from-sorted-array/?tab=Description

从有序数组中移除重复数字,并且返回不重复数字的个数

遍历操作: 可以使用新的for循环 for (int n : nums){}

每次进行对比,并且更新第一个遇到不相等的元素的下标为i

对数组进行重新赋值操作

当数组长度大于1时,ans初值为1,当数组长度为0时,返回0

参考代码 :

package leetcode_50;

/***
 *
 * @author pengfei_zheng
 * 移除有序数组中的重复元素
 */
public class Solution26 {
    public int removeDuplicates(int[] nums) {
        if(nums.length==0) return 0;
        int i = 1;

        for (int n : nums)
            if (n > nums[i-1])//满足则说明不重复
                nums[i++] = n;//更新i
        return i;
    }
}
时间: 03-07

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