[LeetCode]Container With Most Water

来源:互联网 发布:设置centos桌面版全屏 编辑:程序博客网 时间:2024/05/10 06:16

题目描述

Given n non-negative integers a1a2, ..., an, where each represents a point at coordinate (iai). n vertical lines are drawn such that the two endpoints of line i is at (iai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.

Note: You may not slant the container.

 题意是有个高度数组,就相当于隔板的高度,求数组中任意两隔板间盛水的最大量。隔板间的距离与较低隔板的高度乘积即为盛水的容量。

解题思路

我们来看图分析:

计算桶的容积,应该以最短的那条边来计算,如图中的红线和黑实线所围成的,即min(height[left],height[right])*(right - left);
我们从left = 0,right = height.length - 1来考虑,此时宽度最大,高度由min(height[left],height[right])来决定,如果height[left] < height[right],那么如果有最大容积,那么它只能出现在[left+1,right]区间范围内,因为[left,right]长度已是最长,高度最多为height[left],所以为求出最大值则应该left++;
同理如果height[left] > height[right],则right--;
循环结束的判定为left < right;

代码

public class Solution {    public int maxArea(int[] height) {        int v = 0,water = 0;        int left = 0,right = height.length - 1;                while(left < right){        water = 0;        if(height[left] < height[right]){        water = (right - left)*height[left];        left++;        } else{        water = (right - left)*height[right];        right--;        }        if(water > v){        v = water;        }        }                return v;    }}


0 0
原创粉丝点击