hello-algo/codes/c/chapter_greedy/max_capacity.c
xianii d225b416cf
feat: add C code in chapter_greedy (#755)
* add fractional_knapsack.c

* update CMakeLists

* add c code in chapter_greedy

* fix header format

* format code by clang-format

* remove extra comments

* replace ternary operator to MACRO

* parameters form adjustment

* Update fractional_knapsack.c

* Update max_capacity.c

* Update max_product_cutting.c

* add comments for consistency with cpp ver

* move MIN&MAX macro to source file

* typo fix

---------

Co-authored-by: Yudong Jin <krahets@163.com>
2023-09-21 07:52:11 -05:00

43 lines
943 B
C

/**
* File: max_capacity.c
* Created Time: 2023-09-15
* Author: xianii (xianyi.xia@outlook.com)
*/
#include "../utils/common.h"
#define MIN(a, b) (a < b ? a : b)
#define MAX(a, b) (a > b ? a : b)
/* 最大容量:贪心 */
int maxCapacity(int ht[], int htLength) {
// 初始化 i, j 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 = MIN(ht[i], ht[j]) * (j - i);
res = MAX(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;
}