LeetCode-11 Container With Most Water(容器装水最大量)
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.
两边开始向中间逼近,判断当前蓄水量(短板决定高度)是否需要更新。
优化的话,每次逼近时先判断新位置的高度是否高于外侧的高度,否则就直接跳过判断。
public class Solution {
public int maxArea(int[] height) {
int temp = 0;
int max = 0;
int left = 0;
int right = height.length - 1;
while (right > left) {
if (height[left] > height[right] ) {
max = max > height[right]*(right-left) ? max:height[right]*(right-left);//判断max是否需要更新
temp = height[right];
do {
right--;////优化:向中间靠拢,高度却没有更大,就直接pass掉。
} while (temp > height[right] && right > left);
}else {
max = max > height[left]*(right-left) ? max:height[left]*(right-left);
temp = height[left];
do {
left++;
} while (temp > height[left] && right > left);
}
}
return max;
}
}
Run Time:420 ms
好像比别人慢一些,
去网上找了很多代码也差不多都是这样的方法,不解。