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[Leetcode] Container with Most Water

时间:2015-09-30 14:31:09      阅读:128      评论:0      收藏:0      [点我收藏+]

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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.

 

  1. left pointer

  2. right pointer

  3. max to store the result

 

edge case

height == null?

height.length == 0?


time complexity O(n)

 

    public int maxArea(int[] height){
        if(height == null || height.length == 0) return 0;
        int left = 0, right = height.length-1;
        int max = 0;
        while(left<right){
            int curHeight = Math.min(height[left], height[right]);
            int curWidth = right-left;
            int curArea = curHeight*curWidth;
            max = Math.max(max, curArea);
            if(height[left] < height[right]){
                left ++;
            }
            else{
                right--;
            }
        }
        return max;
    }

 

[Leetcode] Container with Most Water

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原文地址:http://www.cnblogs.com/momoco/p/4849065.html

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