C 程序硬币找零
本问题给了我们一个值 n,我们希望找 n 卢比的零钱,而且我们有 n 个数字,每个数字范围从 1 到 m。我们必须返回可组成该总和的总方式数。
示例
Input : N = 6 ; coins = {1,2,4}. Output : 6 Explanation : The total combination that make the sum of 6 is : {1,1,1,1,1,1} ; {1,1,1,1,2}; {1,1,2,2}; {1,1,4}; {2,2,2} ; {2,4}.
示例
#include <stdio.h> int coins( int S[], int m, int n ) { int i, j, x, y; int table[n+1][m]; for (i=0; i<m; i++) table[0][i] = 1; for (i = 1; i < n+1; i++) { for (j = 0; j < m; j++) { x = (i-S[j] >= 0)? table[i - S[j]][j]: 0; y = (j >= 1)? table[i][j-1]: 0; table[i][j] = x + y; } } return table[n][m-1]; } int main() { int arr[] = {1, 2, 3}; int m = sizeof(arr)/sizeof(arr[0]); int n = 4; printf("The total number of combinations of coins that sum up to %d",n); printf(" is %d ", coins(arr, m, n)); return 0; }
输出
The total number of combinations of coins that sum up to 4 is 4
广告