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	* 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>
		
			
				
	
	
		
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			943 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			44 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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