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added a solution for 518 coin-change-2 solution#162
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3 changes: 2 additions & 1 deletionREADME.md
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18 changes: 18 additions & 0 deletionssrc/main/java/com/fishercoder/solutions/_518.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| package com.fishercoder.solutions; | ||
| public class _518 { | ||
| public static class Solution1 { | ||
| public int change(int amount, int[] coins) { | ||
| int[] ways = new int[amount + 1]; | ||
| ways[0] = 1; | ||
| for (int denom : coins) { | ||
| for (int i = 0; i < ways.length; i++) { | ||
| if (denom <= i) { | ||
| ways[i] += ways[i - denom]; | ||
| } | ||
| } | ||
| } | ||
| return ways[amount]; | ||
| } | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletionssrc/test/java/com/fishercoder/_518Test.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| package com.fishercoder; | ||
| import com.fishercoder.solutions._518; | ||
| import org.junit.BeforeClass; | ||
| import org.junit.Test; | ||
| import static junit.framework.Assert.assertEquals; | ||
| public class _518Test { | ||
| private static _518.Solution1 solution1; | ||
| @BeforeClass | ||
| public static void setup() { | ||
| solution1 = new _518.Solution1(); | ||
| } | ||
| @Test | ||
| public void test1() { | ||
| int amount = 5; | ||
| int[] coins = new int[] {1, 2, 5}; | ||
| int expected = 4; | ||
| int actual = solution1.change(amount, coins); | ||
| assertEquals(expected, actual); | ||
| } | ||
| } |
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