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/**
* File: max_capacity.c
* Created Time: 2023-09-15
* Author: xianii (xianyi.xia@outlook.com)
*/
# include "../utils/common.h"
/* 求最小值 */
int myMin ( int a , int b ) {
return a < b ? a : b ;
}
/* 求最大值 */
int myMax ( int a , int b ) {
return a < b ? a : b ;
}
/* 最大容量:贪心 */
int maxCapacity ( int ht [ ] , int htLength ) {
// 初始化 i, j, 使其分列数组两端
int i = 0 ;
int j = htLength - 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 capacity = myMin ( ht [ i ] , ht [ j ] ) * ( j - i ) ;
res = myMax ( res , capacity ) ;
// 向内移动短板
if ( ht [ i ] < ht [ j ] ) {
i + + ;
} else {
j - - ;
}
}
return res ;
}
/* Driver Code */
int main ( void ) {
int ht [ ] = { 3 , 8 , 5 , 2 , 7 , 7 , 3 , 4 } ;
// 贪心算法
int res = maxCapacity ( ht , sizeof ( ht ) / sizeof ( int ) ) ;
printf ( " 最大容量为 %d \n " , res ) ;
return 0 ;
}