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12 changes: 12 additions & 0 deletions pom.xml
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,18 @@
<groupId>com.zipcodewilmington.labs</groupId>
<artifactId>arrayutils</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
Expand Down
61 changes: 54 additions & 7 deletions src/main/java/com/zipcodewilmington/StringArrayUtils.java
Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
package com.zipcodewilmington;

import java.util.Arrays;

/**
* Created by leon on 1/29/18.
*/
Expand All @@ -9,6 +11,7 @@ public class StringArrayUtils {
* @return first element of specified array
*/ // TODO
public static String getFirstElement(String[] array) {

return array[0];
}

Expand All @@ -25,15 +28,17 @@ public static String getSecondElement(String[] array) {
* @return last element in specified array
*/ // TODO
public static String getLastElement(String[] array) {
return null;

return array[array.length-1];
}

/**
* @param array array of String objects
* @return second to last element in specified array
*/ // TODO
public static String getSecondToLastElement(String[] array) {
return null;

return array[array.length-2];
}

/**
Expand All @@ -42,31 +47,67 @@ public static String getSecondToLastElement(String[] array) {
* @return true if the array contains the specified `value`
*/ // TODO
public static boolean contains(String[] array, String value) {
return false;
boolean result = false;
for (int i = 0; i < array.length; i++){
if (array[i].equals(value)) {
result = true;
}
} return result;
}

/**
* @param array of String objects
* @return an array with identical contents in reverse order
*/ // TODO
public static String[] reverse(String[] array) {
return null;
String[] reverseArray = new String[array.length];
int j = array.length;
for (int i = 0; i < array.length; i++) {
reverseArray[j - 1] = array[i];
j = j - 1;
} return reverseArray;
}

/**
* @param array array of String objects
* @return true if the order of the array is the same backwards and forwards
*/ // TODO
public static boolean isPalindromic(String[] array) {
return false;
boolean palCheck = false;
String[] revArray = new String[array.length];
int j = array.length;
for (int i = 0; i < array.length; i++) {
revArray[j - 1] = array[i];
j = j - 1;
if(array[i] == revArray[i]) {
palCheck = true;
}
}
return palCheck;
}

/**
* @param array array of String objects
* @return true if each letter in the alphabet has been used in the array
*/ // TODO
public static boolean isPangramic(String[] array) {
return false;
boolean tester = false;
String arrayToString = "";
for (int j= 0; j < array.length; j++) {
arrayToString = arrayToString.concat(array[j]);
}
arrayToString = arrayToString.toLowerCase();
for(char letters = 'a';letters <= 'z'; letters++) {
for (int i = 0; i < arrayToString.length(); i ++ ){
if (letters == arrayToString.charAt(i)) {
tester = true;
}
}
if (tester == false) {
return tester;
} tester = false;
}
return true;
}

/**
Expand All @@ -75,7 +116,13 @@ public static boolean isPangramic(String[] array) {
* @return number of occurrences the specified `value` has occurred
*/ // TODO
public static int getNumberOfOccurrences(String[] array, String value) {
return 0;
int counter = 0;
for (int i = 0; i < array.length; i++){
if (array[i] == value){
counter++;
}
}
return counter;
}

/**
Expand Down