⭐️ 题目描述

🌟 leetcode链接：移除元素

代码：

/*思路：双指针问题[3,2,2,3] , val = 3src-> [  3    ,    2    ,    2    ,    3   ]destnums[src] == val  => src++src-> [  3    ,    2    ,    2    ,    3   ]	destnums[src] != val  => nums[dest++] = nums[src++];src-> [  2    ,    2    ,    2    ,    3   ]	destnums[src] != val  => nums[dest++] = nums[src++];src-> [  2    ,    2    ,    2    ,    3   ]	destnums[src] == val  => src++-> 循环结束result: [2 , 2] , dest = 2			
*/
int removeElement(int* nums, int numsSize, int val){int src = 0;int dest = 0;while (src < numsSize) {if (nums[src] == val) {src++;} else {nums[dest++] = nums[src++];}}return dest;
}