題目:
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.
The above vertical lines are represented by array [1,8,6,2,5,4,8,3,7]. In this case, the max area of water (blue section) the container can contain is 49.
Example:
Input: [1,8,6,2,5,4,8,3,7] Output: 49
代碼:
class Solution {
public:
int maxArea(vector<int>& height) {
int res = 0, i = 0, j = height.size() - 1;
while (i < j) {
res = max(res, min(height[i], height[j]) * (j - i));
height[i] < height[j] ? ++i : --j;
}
return res;
}
};
想法:
聯繫運用以前所學的知識