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Done #61

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a5a8b76
first commit, not done : (
Feb 9, 2018
042b5ae
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Feb 9, 2018
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58 changes: 46 additions & 12 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
@@ -1,28 +1,62 @@
package io.zipcoder.microlabs.mastering_loops;


import java.util.Arrays;

public class NumberUtilities {
public static String getEvenNumbers(int start, int stop) {
return null;
StringBuilder evenN = new StringBuilder();

for (int i = start; i < stop; i++) {
if ((i % 2) == 0) {
evenN.append(i);
}

}return evenN.toString();
}


public static String getOddNumbers(int start, int stop) {
return null;
}
StringBuilder newStringy = new StringBuilder();

for (int i = start; i < stop; i++) {
if ((i % 2) != 0) {
newStringy.append(i);
}

public static String getSquareNumbers(int start, int stop, int step) {
return null;
}
}return newStringy.toString();
}


public static String getSquareNumbers ( int start, int stop, int step){
StringBuilder newSt = new StringBuilder();

for (int i = start; i < stop; i += step) {
int squareD = (int) Math.pow(i, 2);
newSt.append(squareD);
}
return newSt.toString();
}


public static String getRange ( int start, int stop, int step){
StringBuilder newArr = new StringBuilder();

for (int i = start; i < stop; i += step) {
newArr.append(i);
}
return newArr.toString();
}


public static String getRange(int start, int stop, int step) {
return null;
}

public static String getExponentiationNumbers( int start, int stop, int step, int exponent){
StringBuilder expoS = new StringBuilder();

public static String getExponentiations(int start, int stop, int step, int exponent) {
return null;
for(int i = start; i < stop; i+= step){
int powerS = (int) Math.pow(i, exponent);
expoS.append(powerS);
}
return expoS.toString();
}
}
}
17 changes: 14 additions & 3 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 +1,26 @@
package io.zipcoder.microlabs.mastering_loops;

public class TableUtilities {

public static String getSmallMultiplicationTable() {
return null;
String table = getMultiplicationTable(5);
return table;
}

public static String getLargeMultiplicationTable() {
return null;
String largeTable = getMultiplicationTable(10);
return largeTable;
}

public static String getMultiplicationTable(int tableSize) {
return null;
StringBuilder newTable = new StringBuilder();

for (int i = 1; i <= tableSize; i++) {
for (int m = 1; m <= tableSize; m++) {
newTable.append((String.format("%3d |", i * m)) + "");
}
newTable.append("" + "\n");
}
return newTable.toString();
}
}
40 changes: 34 additions & 6 deletions src/main/java/io/zipcoder/microlabs/mastering_loops/TriangleUtilities.java
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Expand Up @@ -3,18 +3,46 @@
public class TriangleUtilities {

public static String getTriangle(int numberOfRows) {
return null;
StringBuilder newTri = new StringBuilder();

for (int i = 1; i < numberOfRows; i++) {
for (int m = 0; m < i; m++) {
newTri.append("*");
}
newTri.append("\n");
}
return newTri.toString();
}

public static String getRow(int numberOfStars) {
return null;
String newRow = "";
for (int i = 0; i < numberOfStars; i++) {
newRow += "*";
}
return newRow;
}

public static String getSmallTriangle() {
return null;
StringBuilder smallTri = new StringBuilder();
for (int i = 1; i <= 4; i++) {
for (int m = 0; m < i; m++) {
smallTri.append("*");
}
smallTri.append("\n");
}
return smallTri.toString();
}

public static String getLargeTriangle() {
return null;

public static String getLargeTriangle () {
StringBuilder largeTri = new StringBuilder();
for(int i = 1; i <= 9; i++){
for(int m = 0; m < i; m++){
largeTri.append("*");
}
largeTri.append("\n");
}
return largeTri.toString();
}
}
}

19 changes: 3 additions & 16 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 @@ -36,22 +36,10 @@ public void testGetRange2() {
}














@Test
public void testGetEvenNumbers() {
// : Given
String expected = "5791113151719";
String expected = "681012141618";
int start = 5;
int stop = 20;

Expand All @@ -65,7 +53,7 @@ public void testGetEvenNumbers() {
@Test
public void testGetOddNumbers() {
// : Given
String expected = "681012141618";
String expected = "5791113151719";
int start = 5;
int stop = 20;
int step = 5;
Expand All @@ -78,7 +66,6 @@ public void testGetOddNumbers() {
}



@Test
public void testGetSquareNumbers() {
// : Given
Expand All @@ -105,7 +92,7 @@ public void testGetExponentiationNumbers() {
int exponent = 2;

// : When
String actual = NumberUtilities.getExponentiations(start, stop, step, exponent);
String actual = NumberUtilities.getExponentiationNumbers(start, stop, step, exponent);

Assert.assertEquals(expected, actual);
}
Expand Down