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@@ -1,4 +1,4 @@
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-
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+ import java.util.*;
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/**
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* Created by leon on 1/29/18.
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@@ -9,7 +9,7 @@ public class StringArrayUtils {
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* @return first element of specified array
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*/ // TODO
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public static String getFirstElement(String[] array) {
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- return null;
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+ return array[0];
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}
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/**
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@@ -17,7 +17,7 @@ public class StringArrayUtils {
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* @return second element in specified array
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*/
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public static String getSecondElement(String[] array) {
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- return null;
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+ return array[1];
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}
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/**
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@@ -25,7 +25,7 @@ public class StringArrayUtils {
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* @return last element in specified array
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*/ // TODO
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public static String getLastElement(String[] array) {
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- return null;
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+ return array[array.length - 1];
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}
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/**
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@@ -33,7 +33,7 @@ public class StringArrayUtils {
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* @return second to last element in specified array
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*/ // TODO
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public static String getSecondToLastElement(String[] array) {
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- return null;
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+ return array[array.length - 2];
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}
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/**
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@@ -42,7 +42,7 @@ public class StringArrayUtils {
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* @return true if the array contains the specified `value`
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*/ // TODO
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public static boolean contains(String[] array, String value) {
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- return false;
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+ return Arrays.asList(array).contains(value);
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}
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/**
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@@ -50,7 +50,15 @@ public class StringArrayUtils {
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* @return an array with identical contents in reverse order
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*/ // TODO
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public static String[] reverse(String[] array) {
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- return null;
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+
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+ for (int i = 0; i < array.length/2; i++){
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+ String temp = array[i];
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+ array[i] = array[(array.length -1) - i];
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+ array[(array.length -1) - i] = temp;
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+ }
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+
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+ return array;
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+
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}
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/**
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@@ -75,7 +83,13 @@ public class StringArrayUtils {
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* @return number of occurrences the specified `value` has occurred
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*/ // TODO
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public static int getNumberOfOccurrences(String[] array, String value) {
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- return 0;
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+ int counter = 0;
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+ for(String str: array){
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+ if(str.equals(value)) {
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+ counter++;
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+ }
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+ }
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+ return counter;
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}
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/**
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