Praktikum 1: mehr Tests

This commit is contained in:
Johannes Theiner 2018-03-26 11:40:27 +02:00
parent bc6f5891a3
commit fd059a6f88
3 changed files with 45 additions and 17 deletions

View File

@ -4,6 +4,8 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<name>Java 2</name>
<groupId>de.joethei.hs</groupId>
<artifactId>java2</artifactId>
<version>1.0-SNAPSHOT</version>

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@ -39,14 +39,6 @@ public class GrosseZahl {
this.ziffern = ziffern;
}
public String toString() {
StringBuilder rueckgabe = new StringBuilder();
for (int ziffer : ziffern) {
rueckgabe.append(Integer.toString(ziffer));
}
return rueckgabe.toString();
}
public boolean less(GrosseZahl b) {
if(this.equals(b)) return false;
if (this.ziffern.length < b.ziffern.length) return true;
@ -62,13 +54,7 @@ public class GrosseZahl {
GrosseZahl big = this.less(b) ? b : this;
GrosseZahl small = this.less(b) ? this : b;
int[] array;
if(big.ziffern.length != small.ziffern.length) {
int diff = big.ziffern.length - small.ziffern.length;
array = new int[small.ziffern.length + diff];
Arrays.fill(array, 0);
}else array = new int[small.ziffern.length];
int[] array = fill(big, small);
for(int i = small.ziffern.length - 1; i >= 0; i--) {
array[array.length - i - 1] = small.ziffern[small.ziffern.length - i - 1];
@ -90,9 +76,32 @@ public class GrosseZahl {
}
public GrosseZahl sub(GrosseZahl b) {
GrosseZahl big = this.less(b) ? b : this;
GrosseZahl small = this.less(b) ? this : b;
int[] array;
array = fill(big, small);
for(int i = small.ziffern.length - 1; i >= 0; i--) {
array[array.length - i - 1] = small.ziffern[small.ziffern.length - i - 1];
}
return null;
logger.info(Arrays.toString(array));
return new GrosseZahl(array);
}
private int[] fill(GrosseZahl big, GrosseZahl small) {
int[] array;
if(big.ziffern.length != small.ziffern.length) {
int diff = big.ziffern.length - small.ziffern.length;
array = new int[small.ziffern.length + diff];
Arrays.fill(array, 0);
}else array = new int[small.ziffern.length];
return array;
}
public GrosseZahl mult(GrosseZahl b) {
@ -125,6 +134,15 @@ public class GrosseZahl {
else return this.sub(b).ggT(b);
}
@Override
public String toString() {
StringBuilder result = new StringBuilder();
for (int ziffer : ziffern) {
result.append(Integer.toString(ziffer));
}
return result.toString();
}
@Override
public boolean equals(Object o) {
if(o instanceof GrosseZahl) {

View File

@ -14,6 +14,7 @@ class GrosseZahlTest {
assertThrows(NumberFormatException.class, exec);
assertEquals(new GrosseZahl("1456"), new GrosseZahl(1456));
assertNotEquals(new GrosseZahl("1234"), new GrosseZahl(1233));
assertNotEquals(new GrosseZahl(14), 15);
}
@Test
@ -26,13 +27,13 @@ class GrosseZahlTest {
assertEquals(new GrosseZahl(4000), new GrosseZahl(500).add(new GrosseZahl(3500)));
}
/*
@Test
void sub() {
assertEquals(new GrosseZahl(42), new GrosseZahl(100).sub(new GrosseZahl(58)));
assertNotEquals(new GrosseZahl(43), new GrosseZahl(100).sub(new GrosseZahl(58)));
}
/*
@Test
void mult() {
assertEquals(new GrosseZahl(15), new GrosseZahl("5").mult(new GrosseZahl(3)));
@ -47,6 +48,13 @@ class GrosseZahlTest {
assertFalse(new GrosseZahl("12345").less(new GrosseZahl("1234")));
assertFalse(new GrosseZahl("1234").less(new GrosseZahl("1234")));
assertFalse(new GrosseZahl("1234").less(new GrosseZahl("1233")));
assertTrue(new GrosseZahl(1233).less(new GrosseZahl(1234)));
}
@Test
void toStringTest() {
assertEquals("45", new GrosseZahl(45).toString());
assertEquals("45", new GrosseZahl("45").toString());
}
/*