Leetcode#135 Candy
遍历所有小孩的分数
1. 若小孩的分数递增,分给小孩的糖果依次+1
2. 若小孩的分数递减,分给小孩的糖果依次-1
3. 若小孩的分数相等,分给小孩的糖果设为1
当递减序列结束时,如果少分了糖果,就补上,如果多分了糖果,就减掉
究竟补多少或减多少,这很容易计算,不啰嗦了。
时间复杂度:O(n)
代码:
int candy(vector<int> &ratings) {
int n = ratings.size();
int sum = ;
int len = ;
int prev = ; for (int i = ; i < n; i++) {
if (ratings[i] == ratings[i - ]) {
prev = ;
len = ;
sum += prev;
}
else if (ratings[i] > ratings[i - ]) {
prev++;
len = ;
sum += prev;
}
else if (ratings[i] < ratings[i - ]) {
prev--;
len++;
sum += prev;
if (i == n - || ratings[i] <= ratings[i + ]) {
sum += prev < ? ( - prev) * (len + ) : ( - prev) * len;
prev = ;
}
}
} return sum;
}
Leetcode#135 Candy的更多相关文章
- LeetCode 135 Candy(贪心算法)
135. Candy There are N children standing in a line. Each child is assigned a rating value. You are g ...
- (LeetCode 135) Candy N个孩子站成一排,给每个人设定一个权重
原文:http://www.cnblogs.com/AndyJee/p/4483043.html There are N children standing in a line. Each child ...
- leetcode 135. Candy ----- java
There are N children standing in a line. Each child is assigned a rating value. You are giving candi ...
- Java for LeetCode 135 Candy
There are N children standing in a line. Each child is assigned a rating value. You are giving candi ...
- [leetcode] 135. Candy (hard)
原题 前后两遍遍历 class Solution { public: int candy(vector<int> &ratings) { vector<int> res ...
- [Leetcode 135]糖果分配 Candy
[题目] There are N children standing in a line. Each child is assigned a rating value. You are giving ...
- 【LeetCode】135. Candy
Candy There are N children standing in a line. Each child is assigned a rating value. You are giving ...
- [LeetCode][Java]Candy@LeetCode
Candy There are N children standing in a line. Each child is assigned a rating value. You are giving ...
- 135. Candy
题目: There are N children standing in a line. Each child is assigned a rating value. You are giving c ...
随机推荐
- luigi学习4-构建工作流
luigi提供了两个基本单元来构造一个工作流,这两个基本单元分别是Task和Target.这两个单元都是抽象类,我们实现他们中的某些方法就可以了.除了这两个基本单元,还有一个重要的概念是Pramete ...
- js 获取当天23点59分59秒 时间戳 (最简单的方法)
js 获取当天23点59分59秒 时间戳 (最简单的方法) new Date(new Date(new Date().toLocaleDateString()).getTime()+24*60*60* ...
- ecshop常用语句
ecshop之中的IF语句: <select name="product_cat" id="product_cat" class="form-c ...
- [Linux] Ubuntu Server 12.04 LTS 平台上搭建WordPress(Nginx+MySQL+PHP) Part IV
接下来我们去下载 WorePress 用最新的 3.7.1 下载地址是:http://cn.wordpress.org/wordpress-3.7.1-zh_CN.zip 我们先建立一个文件夹 /va ...
- delphi常用函数过程
数据类型转化 1.1. 数值和字符串转化 Procedure Str(X [: Width [ : Decimals ]]; var S); 将数值X按照一定格式转化成字符串S.Wid ...
- java作用域public ,private ,protected 及不写时的区别(转)
在说明这四个关键字之前,我想就class之间的关系做一个简单的定 义,对于继承自己的class,base class可以认为他们都是自己的子 女,而对于和自己一个目录下的classes,认为都是自己的 ...
- C#之匿名类型与隐式局部变量
一.匿名类型 下面一段代码展示了如何定义并且使用匿名类型: static void Main(string[] args) { var patent1 = new { Title = "Ne ...
- 内存分配函数malloc、realloc、calloc、_alloca
1.内存分配函数_alloca.malloc.realloc.calloc: _alloca 函数原型void * __cdecl _alloca(size_t); 头文件:malloc.h _all ...
- MvcAdmin功能介绍
应群友要求做一个介绍(QQ群:159227188) 已经迁移到这里,已经迁移到这里,已经迁移到这里,重要的事情说三遍 http://www.cnblogs.com/RainbowInTheSky/p/ ...
- C 函数可变参数
C 函数可变参数 C 语言中用 ... 表示可变参数,例如: void fun(int x ...) 头文件 cstdarg.h 中包含可变参数类型va_list和处理可变参数的三个宏: va_lis ...