11. Container With Most Water

Posted 2020-10-21 小河沟大河沟

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11. Container With Most Water

题目

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) 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 and n is at least 2. 

解析

• 再次体会到双指针操作的厉害了
• 理解题意为什么++--就可以实现取最大的容器，容器的面积由短板决定！！！

// 11. Container With Most Water 
class Solution_11 {
public:
    int maxArea(vector<int> &height) {
        int start = 0;
        int end = height.size() - 1;

        int max_area = 0;
        while (start<end)
        {
            max_area = max(max_area, min(height[start],height[end])*(end-start) );
            if (height[start]<=height[end]) 
            {
                start++;
            }
            else
            {
                end--;
            }
        }
        return max_area;
    }
};

题目来源

• 11. Container With Most Water