2023-08-13 19:29:54 +08:00
|
|
|
|
/**
|
|
|
|
|
* File: max_capacity.dart
|
|
|
|
|
* Created Time: 2023-08-11
|
|
|
|
|
* Author: liuyuxin (gvenusleo@gmail.com)
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
import 'dart:math';
|
|
|
|
|
|
|
|
|
|
/* 最大容量:贪心 */
|
|
|
|
|
int maxCapacity(List<int> ht) {
|
2023-12-28 18:06:09 +08:00
|
|
|
|
// 初始化 i, j,使其分列数组两端
|
2023-08-13 19:29:54 +08:00
|
|
|
|
int i = 0, j = ht.length - 1;
|
|
|
|
|
// 初始最大容量为 0
|
|
|
|
|
int res = 0;
|
|
|
|
|
// 循环贪心选择,直至两板相遇
|
|
|
|
|
while (i < j) {
|
|
|
|
|
// 更新最大容量
|
|
|
|
|
int cap = min(ht[i], ht[j]) * (j - i);
|
|
|
|
|
res = max(res, cap);
|
|
|
|
|
// 向内移动短板
|
|
|
|
|
if (ht[i] < ht[j]) {
|
|
|
|
|
i++;
|
|
|
|
|
} else {
|
|
|
|
|
j--;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return res;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Driver Code */
|
|
|
|
|
void main() {
|
|
|
|
|
List<int> ht = [3, 8, 5, 2, 7, 7, 3, 4];
|
|
|
|
|
|
|
|
|
|
// 贪心算法
|
|
|
|
|
int res = maxCapacity(ht);
|
|
|
|
|
print("最大容量为 $res");
|
|
|
|
|
}
|