Majority Element II
来源:互联网 发布:win7 for mac 编辑:程序博客网 时间:2024/05/17 08:19
Given an integer array of size n, find all elements that appear more than ⌊ n/3 ⌋ times. The algorithm should run in linear time and in O(1) space.
解题思路:
(1)定义两个大小为2数组,一个为temp[2]存储元素,一个为times[2]存储次数
(2)若当前元素不同于temp数组中的元素,且times数组中有0,则将相应的元素用当前元素取代,并置相应的times为1
(3)若当前元素不同于temp数组中的元素,且times数组中没有0,则将times中的所有元素均减1
(4)若当前元素与temp数组中的某个元素相同,则将其对应的times增1;
(5)最后统计元素出现的次数是否满足条件的要求
int* majorityElement(int* nums, int numsSize, int* returnSize) {
if (nums == NULL || numsSize == 0) return NULL;int* returnNums = (int*)malloc(sizeof(int)*2);int temp[2] = {NULL,NULL};int times[2] = {0,0};for (int i = 0; i < numsSize; i++){ if (times[0] == 0 && nums[i] != temp[1]) { times[0] = 1; temp[0] = nums[i]; } else if (times[1] == 0 && nums[i] != temp[0]) { times[1] = 1; temp[1] = nums[i]; } else if (nums[i] != temp[0] && nums[i] != temp[1]) { times[0]--; times[1]--; } else if (nums[i] == temp[0]) { times[0]++; } else { times[1]++; }}*returnSize = 0;for (int i = 0; i < 2; i++){ if (times[i] != 0) { int count = 0; for (int j = 0; j < numsSize; j++) { if (temp[i] == nums[j]) count++; } if (count > numsSize/3) { returnNums[(*returnSize)++] = temp[i]; } }}return returnNums;
}
0 0
- Majority Element && Majority Element II
- Majority Element II
- [LeetCode] Majority Element II
- 229.Majority Element II
- Majority Element II
- [leetcode] Majority Element II
- Majority Element II
- #leetcode#Majority Element II
- 【LeetCode】Majority Element II
- LeetCode Majority Element II
- LeetCode - Majority Element II
- Majority Element II
- LeetCode Majority Element II
- leetcode: Majority Element II
- [LeetCode] Majority Element II
- leetcode--Majority Element II
- LeetCode229:Majority Element II
- Majority Element II
- 替换空格
- 【转载】Word2010画布中形状无法使用对齐的解决办法
- 多元线性回归
- 学习unity的一些经验和见解
- Asp.net页面间通过Post方式传递参数
- Majority Element II
- Ubuntu14.04上安装pycharm社区版
- Does Oracle really offer any OCI demo/sample programs?
- 242 Valid Anagram
- linux检测网线插拔状态
- Python运算符
- log4j2 配置详解 及使用
- HDOJ5074Hatsune Miku【dp】
- java.lang.IllegalArgumentException: pointerIndex out of range