#11 Container With Most Water

原题链接：https://leetcode.com/problems/container-with-most-water/

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.

int Min(int a, int b) {
    return a < b ? a : b;
}
//left,right分别初始化为第一个板和最后一个板，他们依次向中间移动，宽度变小，只有高度变大才有可能使总容量变大；而高度受限于较短板，所以只有移动较短的板才有可能使总容量变大
int maxArea(int* height, int heightSize) {
    int left = 0, right = heightSize - 1;
    int max = 0;
    while(left < right) {
        if(max < (right - left) * Min(height[left], height[right]))
            max = (right - left) * Min(height[left], height[right]);
        if(height[left] < height[right])    
            ++left;
        else
            --right;
    }
    
    return max;
}