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AhkunTa
Arithmetic
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Arithmetic
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LeetCode
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11_javascript.js
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master
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Arithmetic
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LeetCode
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11_javascript.js
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// 给你 n 个非负整数 a1,a2,...,an,每个数代表坐标中的一个点 (i, ai) 。在坐标内画 n 条垂直线,垂直线 i 的两个端点分别为 (i, ai) 和 (i, 0)。找出其中的两条线,使得它们与 x 轴共同构成的容器可以容纳最多的水。
// 说明:你不能倾斜容器,且 n 的值至少为 2。
//
// 图中垂直线代表输入数组 [1,8,6,2,5,4,8,3,7]。在此情况下,容器能够容纳水(表示为蓝色部分)的最大值为 49。
//
// 示例:
// 输入:[1,8,6,2,5,4,8,3,7]
// 输出:49
// 图 https://leetcode-cn.com/problems/container-with-most-water/
/**
* @param {number[]} height
* @return {number}
*/
// 双指针 一头一尾
// 因为面积取决于指针的距离与值小的值乘积,如果值大的值向内移动,距离一定减小,
// 而求面积的另外一个乘数一定小于等于值小的值,因此面积一定减小,而我们要求最大的面积,因此值大的指针不动,而值小的指针向内移动遍历
var maxArea = function (height) {
let max = 0;
let i = 0,
j = height.length - 1;
while (i < j) {
let temp_max = Math.min(height[i], height[j]) * (j - i);
if (max < temp_max) {
max = temp_max;
}
if (height[i] < height[j]) {
i++;
} else {
j--;
}
}
return max;
};
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