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first commit almost done #64

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51bf571
first commit almost done
SupaGrammer Feb 10, 2018
1c66ec4
ayyyy im out here
SupaGrammer Feb 10, 2018
d3ee780
Refactor
SupaGrammer Apr 16, 2018
f4e92ec
Refactor 2
SupaGrammer Apr 16, 2018
fe52ffb
Refactor 3
SupaGrammer Apr 16, 2018
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5 changes: 4 additions & 1 deletion src/main/java/io/zipcoder/microlabs/mastering_loops/MainApp.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,10 @@
/**
* Created by leon on 1/31/18.
*/
public class MainApp {
public class MainApp extends TableUtilities{
public static void main(String[] args) {
TableUtilities result = new TableUtilities();
System.out.print(result.getMultiplicationTable(20));

}
}
58 changes: 44 additions & 14 deletions src/main/java/io/zipcoder/microlabs/mastering_loops/NumberUtilities.java
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Original file line number Diff line number Diff line change
@@ -1,36 +1,66 @@
package io.zipcoder.microlabs.mastering_loops;


public class NumberUtilities {
public static String getEvenNumbers(int start, int stop) {
return null;
}
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i++) {
if (i % 2 == 0) {
numList.append(i);
}
}

return numList.toString();
}

public static String getOddNumbers(int start, int stop) {
return null;
}
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i++) {
if (i % 2 != 0) {
numList.append(i);
}
}

return numList.toString();
}

public static String getSquareNumbers(int start, int stop, int step) {
return null;
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i += step) {
int x = (int) Math.pow(i, 2);
numList.append(String.valueOf(x));
}

return numList.toString();
}

public static String getRange(int start) {
return null;
public static String getRange(int stop) {
StringBuilder numList = new StringBuilder();
for (int i = 0; i < stop; i++)
numList.append(String.valueOf(i));
return numList.toString();
}

public static String getRange(int start, int stop) {
return null;
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i++)
numList.append(String.valueOf(i));
return numList.toString();
}


public static String getRange(int start, int stop, int step) {
return null;
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i+=step)
numList.append(String.valueOf(i));
return numList.toString();
}


public static String getExponentiations(int start, int stop, int step, int exponent) {
return null;
StringBuilder numList = new StringBuilder();
for (int i = start; i < stop; i += step) {
int x = (int) Math.pow(i, exponent);
numList.append(String.valueOf(x));
}

return numList.toString();
}
}
}
52 changes: 45 additions & 7 deletions src/main/java/io/zipcoder/microlabs/mastering_loops/TableUtilities.java
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Original file line number Diff line number Diff line change
@@ -1,15 +1,53 @@
package io.zipcoder.microlabs.mastering_loops;

public class TableUtilities {
public static String getSmallMultiplicationTable() {
return null;
/**
*
* @return a formatted multiplication table of various sizes
*/

public String getSmallMultiplicationTable() {
StringBuilder smallTable = new StringBuilder();
for (int i = 1; i < 6; i++) {
StringBuilder grow = new StringBuilder();
for (int a = 1; a < 6; a++) {
int b = a * i;
grow.append(String.format("%3d", b)).append(" |");
}

smallTable.append(grow).append("\n");
}

return smallTable.toString();
}

public static String getLargeMultiplicationTable() {
return null;
public String getLargeMultiplicationTable() {
StringBuilder bigTable = new StringBuilder();
for (int i = 1; i < 11; i++) {
StringBuilder grow = new StringBuilder();
for (int a = 1; a < 11; a++) {
int b = a * i;
grow.append(String.format("%3d", b)).append(" |");
}

bigTable.append(grow).append("\n");
}

return bigTable.toString();
}

public static String getMultiplicationTable(int tableSize) {
return null;
public String getMultiplicationTable(int tableSize) {
StringBuilder table = new StringBuilder();
for (int i = 1; i < 21; i++) {
StringBuilder grow = new StringBuilder();
for (int a = 1; a < 21; a++) {
int b = a * i;
grow.append(String.format("%3d", b)).append(" |");
}

table.append(grow).append("\n");
}

return table.toString();
}
}
}
42 changes: 38 additions & 4 deletions src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,18 +3,52 @@
public class TriangleUtilities {

public static String getTriangle(int numberOfRows) {
return null;
StringBuilder newTriangle = new StringBuilder("*\n");
StringBuilder newLine = new StringBuilder("*");
int counter = 1;
while (counter < numberOfRows - 1) {
newLine.append("*");
newTriangle.append(newLine).append("\n");
counter++;
}

return newTriangle.toString();
}

public static String getRow(int numberOfStars) {
return null;
StringBuilder star = new StringBuilder();
int counter = 1;
while (counter <= numberOfStars) {
star.append("*");
counter++;
}

return star.toString();
}

public static String getSmallTriangle() {
return null;
StringBuilder newTriangle = new StringBuilder("*\n");
StringBuilder newLine = new StringBuilder("*");
int counter = 1;
while (counter < 4) {
newLine.append("*");
newTriangle.append(newLine).append("\n");
counter++;
}

return newTriangle.toString();
}

public static String getLargeTriangle() {
return null;
StringBuilder newTriangle = new StringBuilder("*\n");
StringBuilder newLine = new StringBuilder("*");
int counter = 1;
while (counter < 9) {
newLine.append("*");
newTriangle.append(newLine).append("\n");
counter++;
}

return newTriangle.toString();
}
}
8 changes: 4 additions & 4 deletions src/test/java/io/zipcoder/microlabs/mastering_loops/NumberUtilitiesTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ public class NumberUtilitiesTest {
public void testGetRange1A() {
// : Given
String expected = "0123456789";
int stop = 11;
int stop = 10;

// : When
String actual = NumberUtilities.getRange(stop);
Expand Down Expand Up @@ -87,7 +87,7 @@ public void testGetRange2B() {
@Test
public void testGetRange3B() {
// : Given
String expected = "100101103104105106107108109";
String expected = "100101102103104105106107108109";
int start = 100;
int stop = 110;

Expand Down Expand Up @@ -173,7 +173,7 @@ public void testGetRange3C() {
@Test
public void testGetEvenNumbers() {
// : Given
String expected = "5791113151719";
String expected = "681012141618";
int start = 5;
int stop = 20;

Expand All @@ -187,7 +187,7 @@ public void testGetEvenNumbers() {
@Test
public void testGetOddNumbers() {
// : Given
String expected = "681012141618";
String expected = "5791113151719";
int start = 5;
int stop = 20;
int step = 5;
Expand Down
8 changes: 5 additions & 3 deletions src/test/java/io/zipcoder/microlabs/mastering_loops/TableUtilitiesTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@
* Created by leon on 1/31/18.
*/
public class TableUtilitiesTest {

TableUtilities table = new TableUtilities();
@Test
public void testGetLargeMultiplicationTable() {
String expected =
Expand All @@ -21,7 +23,7 @@ public void testGetLargeMultiplicationTable() {
" 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 | 90 |\n" +
" 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |100 |\n";

String actual = TableUtilities.getLargeMultiplicationTable();
String actual = table.getLargeMultiplicationTable();
Assert.assertEquals(expected, actual);
}

Expand All @@ -35,7 +37,7 @@ public void testGetSmallMultiplicationTable() {
" 4 | 8 | 12 | 16 | 20 |\n" +
" 5 | 10 | 15 | 20 | 25 |\n";

String actual = TableUtilities.getSmallMultiplicationTable();
String actual = table.getSmallMultiplicationTable();
Assert.assertEquals(expected, actual);
}

Expand All @@ -62,7 +64,7 @@ public void testGetMultiplicationTable() {
" 18 | 36 | 54 | 72 | 90 |108 |126 |144 |162 |180 |198 |216 |234 |252 |270 |288 |306 |324 |342 |360 |\n" +
" 19 | 38 | 57 | 76 | 95 |114 |133 |152 |171 |190 |209 |228 |247 |266 |285 |304 |323 |342 |361 |380 |\n" +
" 20 | 40 | 60 | 80 |100 |120 |140 |160 |180 |200 |220 |240 |260 |280 |300 |320 |340 |360 |380 |400 |\n";
String actual = TableUtilities.getMultiplicationTable(20);
String actual = table.getMultiplicationTable(20);
Assert.assertEquals(expected, actual);
}

Expand Down