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@@ -8,7 +8,7 @@ public class StringUtilities {
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* @return `Hello World` as a string
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*/
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public static String getHelloWorld() {
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- return null;
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+ return "Hello World";
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}
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/**
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@@ -17,7 +17,7 @@ public class StringUtilities {
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* @return the concatenation of two strings, `firstSegment`, and `secondSegment`
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*/
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public static String concatenation(String firstSegment, String secondSegment){
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- return null;
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+ return firstSegment + secondSegment;
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}
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/**
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@@ -26,7 +26,8 @@ public class StringUtilities {
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* @return the concatenation of an integer, `firstSegment`, and a String, `secondSegment`
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*/
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public static String concatenation(int firstSegment, String secondSegment){
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- return null;
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+
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+ return firstSegment + secondSegment;
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}
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/**
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@@ -34,7 +35,9 @@ public class StringUtilities {
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* @return the first 3 characters of `input`
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*/
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public static String getPrefix(String input){
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- return null;
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+ return input.substring(0, 3);
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+
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+
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}
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/**
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@@ -42,7 +45,8 @@ public class StringUtilities {
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* @return the last 3 characters of `input`
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*/
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public static String getSuffix(String input){
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- return null;
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+ return input.substring(input.length() - 3);
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+
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}
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/**
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@@ -51,7 +55,8 @@ public class StringUtilities {
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* @return the equivalence of two strings, `inputValue` and `comparableValue`
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*/
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public static Boolean compareTwoStrings(String inputValue, String comparableValue){
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- return null;
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+ return (inputValue.equals(comparableValue)) ;
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+
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}
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/**
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@@ -59,7 +64,15 @@ public class StringUtilities {
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* @return the middle character of `inputValue`
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*/
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public static Character getMiddleCharacter(String inputValue){
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- return null;
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+ if (inputValue.length() % 2 == 1){
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+ int bob = inputValue.length()/2;
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+ return inputValue.charAt(bob);
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+ }
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+ else {
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+ int bob = (inputValue.length() - 1)/2;
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+ return inputValue.charAt(bob);
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+ }
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+
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}
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/**
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@@ -67,7 +80,9 @@ public class StringUtilities {
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* @return the first sequence of characters
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*/
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public static String getFirstWord(String spaceDelimitedString){
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- return null;
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+ String[] splitStr = spaceDelimitedString.trim().split("\\s+");
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+ return splitStr[0];
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+
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}
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/**
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@@ -75,7 +90,9 @@ public class StringUtilities {
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* @return the second word of a string delimited by spaces.
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*/
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public static String getSecondWord(String spaceDelimitedString){
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- return null;
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+ String[] splitStr = spaceDelimitedString.trim().split("\\s+");
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+ return splitStr[1];
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+
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}
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/**
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@@ -83,6 +100,9 @@ public class StringUtilities {
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* @return an identical string with characters in reverse order.
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*/
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public static String reverseTheTwo(String stringToReverse){
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- return null;
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+ String bob = stringToReverse;
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+ return new StringBuilder(bob).reverse().toString();
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+
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+
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}
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}
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