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d225b416cf
* 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>
43 lines
943 B
C
43 lines
943 B
C
/**
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* File: max_capacity.c
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* Created Time: 2023-09-15
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* Author: xianii (xianyi.xia@outlook.com)
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*/
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#include "../utils/common.h"
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#define MIN(a, b) (a < b ? a : b)
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#define MAX(a, b) (a > b ? a : b)
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/* 最大容量:贪心 */
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int maxCapacity(int ht[], int htLength) {
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// 初始化 i, j 分列数组两端
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int i = 0;
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int j = htLength - 1;
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// 初始最大容量为 0
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int res = 0;
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// 循环贪心选择,直至两板相遇
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while (i < j) {
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// 更新最大容量
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int capacity = MIN(ht[i], ht[j]) * (j - i);
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res = MAX(res, capacity);
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// 向内移动短板
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if (ht[i] < ht[j]) {
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i++;
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} else {
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j--;
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}
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}
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return res;
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}
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/* Driver Code */
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int main(void) {
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int ht[] = {3, 8, 5, 2, 7, 7, 3, 4};
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// 贪心算法
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int res = maxCapacity(ht, sizeof(ht) / sizeof(int));
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printf("最大容量为 %d\n", res);
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return 0;
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}
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