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Commit52642b0

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add a solution for 860
1 parenta9bde29 commit52642b0

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2 files changed

+68
-35
lines changed
  • src
    • main/java/com/fishercoder/solutions/firstthousand
    • test/java/com/fishercoder/firstthousand

2 files changed

+68
-35
lines changed

‎src/main/java/com/fishercoder/solutions/firstthousand/_860.java

Lines changed: 33 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -54,4 +54,37 @@ public boolean lemonadeChange(int[] bills) {
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returntrue;
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}
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}
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publicstaticclassSolution2 {
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/**
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* My original solution on 8/14/2024.
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* You only need to keep track of the number of $5 and $10 bills at hand.
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*/
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publicbooleanlemonadeChange(int[]bills) {
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int[]changes =newint[2];//5 and 10
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for (intbill :bills) {
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if (bill ==5) {
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changes[0]++;
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}elseif (bill ==10) {
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if (changes[0] <=0) {
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returnfalse;
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}else {
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changes[0]--;
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}
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changes[1]++;
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}elseif (bill ==20) {
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if (changes[1] >0 &&changes[0] >0) {
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changes[1]--;
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changes[0]--;
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}elseif (changes[0] >2) {
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changes[0] -=3;
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}else {
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returnfalse;
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}
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}
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}
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returntrue;
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}
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}
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}

‎src/test/java/com/fishercoder/firstthousand/_860Test.java

Lines changed: 35 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -8,41 +8,41 @@
88

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publicclass_860Test {
1010

11-
private_860.Solution1test;
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privatestaticint[]bills;
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private_860.Solution1test;
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privatestaticint[]bills;
1313

14-
@BeforeEach
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@BeforeEach
1515
publicvoidsetUp() {
16-
test =new_860.Solution1();
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}
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@Test
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publicvoidtest1() {
21-
bills =newint[]{5,5,5,10,20};
22-
assertEquals(true,test.lemonadeChange(bills));
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}
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25-
@Test
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publicvoidtest2() {
27-
bills =newint[]{5,5,10};
28-
assertEquals(true,test.lemonadeChange(bills));
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}
30-
31-
@Test
32-
publicvoidtest3() {
33-
bills =newint[]{10,10};
34-
assertEquals(false,test.lemonadeChange(bills));
35-
}
36-
37-
@Test
38-
publicvoidtest4() {
39-
bills =newint[]{5,5,10,10,20};
40-
assertEquals(false,test.lemonadeChange(bills));
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}
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43-
@Test
44-
publicvoidtest5() {
45-
bills =newint[]{5,5,5,20,5,5,5,10,20,5,10,20,5,20,5,10,5,5,5,5};
46-
assertEquals(false,test.lemonadeChange(bills));
47-
}
16+
test =new_860.Solution1();
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}
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@Test
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publicvoidtest1() {
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bills =newint[]{5,5,5,10,20};
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assertEquals(true,test.lemonadeChange(bills));
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}
24+
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@Test
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publicvoidtest2() {
27+
bills =newint[]{5,5,10};
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assertEquals(true,test.lemonadeChange(bills));
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}
30+
31+
@Test
32+
publicvoidtest3() {
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bills =newint[]{10,10};
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assertEquals(false,test.lemonadeChange(bills));
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}
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37+
@Test
38+
publicvoidtest4() {
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bills =newint[]{5,5,10,10,20};
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assertEquals(false,test.lemonadeChange(bills));
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}
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43+
@Test
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publicvoidtest5() {
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bills =newint[]{5,5,5,20,5,5,5,10,20,5,10,20,5,20,5,10,5,5,5,5};
46+
assertEquals(false,test.lemonadeChange(bills));
47+
}
4848
}

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