26. Remove Duplicates from Sorted Array【删除排序数组中的重复项】

package LeetCode;

public class Test {
    public static void main(String[] args) {
        int[] nums1 = {1,1,2};
        System.out.println(removeDuplicates(nums1));
        
        int[] nums2 = {0,0,1,1,1,2,2,3,3,4};
        System.out.println(removeDuplicates(nums2));
        
    }
    
    /**
     * 采用外带的变量直接去重
     */
    public static int removeDuplicates(int[] nums) {
        if (nums.length == 0) {
            return 0;
        } else if (nums.length == 1) {
            return 1;
        }
        
        int i = 0;
        for (int j = 1; j < nums.length; j++) {
            if (nums[i] != nums[j]) {
                i++;
                nums[i] = nums[j];
            }
        }
        
        return i+1;
    }
}