Jun 10, 2025 · Jun 10, 2025 · Jun 10, 2025
diff --git a/0518_coin_change_ii/Makefile b/0518_coin_change_ii/Makefile
diff --git a/0518_coin_change_ii/coin_change.c b/0518_coin_change_ii/coin_change.c
diff --git a/0518_coin_change_ii/coin_change.cc b/0518_coin_change_ii/coin_change.cc
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,44 @@
	#include <stdio.h>
	#include <stdlib.h>


	int change(int amount, int* coins, int coinsSize)
	{
	int i, j;
	unsigned int *dp = malloc((coinsSize + 1) sizeof(unsigned int *));

	for (i = 0; i <= coinsSize; i++) {
	dp[i] = calloc(amount + 1, sizeof(unsigned int));
	dp[i][0] = 1;
	}

	for (i = 1; i <= coinsSize; i++) {
	for (j = 1; j <= amount; j++) {
	if (j - coins[i - 1] >= 0) {
	dp[i][j] = dp[i - 1][j] + dp[i][j - coins[i - 1]];
	} else {
	dp[i][j] = dp[i - 1][j];
	}
	}
	}

	return dp[coinsSize][amount];
	}

	int main(int argc, char **argv)
	{
	if (argc < 3) {
	fprintf(stderr, "Usage: ./test 11 1 2 5");
	exit(-1);
	}

	int amount = atoi(argv[1]);
	int i, size = argc - 2;
	int coins = malloc(size sizeof(int));
	for (i = 0; i < size; i++) {
	coins[i] = atoi(argv[i + 2]);
	}
	printf("%d\n", change(amount, coins, size));

	return 0;
	}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,24 @@
	#include <bits/stdc++.h>

	using namespace std;

	class Solution {
	public:
	int change(int amount, vector<int>& coins) {
	vector<vector<unsigned int>> dp(coins.size() + 1, vector<unsigned int>(amount + 1));
	for (int i = 0; i <= coins.size(); i++) {
	dp[i][0] = 1;
	}

	for (int i = 1; i <= coins.size(); i++) {
	for (int j = 1; j <= amount; j++) {
	if (j >= coins[i - 1]) {
	dp[i][j] = dp[i - 1][j] + dp[i][j - coins[i - 1]];
	} else {
	dp[i][j] = dp[i - 1][j];
	}
	}
	}
	return dp[coins.size()][amount];
	}
	};