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@@ -8,81 +8,116 @@ 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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+
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+ return "Hello World";
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}
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/**
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- * @param firstSegment a string to be added to
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+ * @param firstSegment a string to be added to
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* @param secondSegment a string to add
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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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+ public static String concatenation(String firstSegment, String secondSegment) {
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+
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+ return firstSegment + secondSegment;
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}
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/**
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- * @param firstSegment a string to be added to
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+ * @param firstSegment a string to be added to
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* @param secondSegment a string to add
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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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+ public static String concatenation(int firstSegment, String secondSegment) {
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+
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+ return firstSegment + secondSegment;
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}
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/**
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* @param input a string to be manipulated
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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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+ public static String getPrefix(String input) {
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+
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+ return input.substring(0, 3);
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}
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/**
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* @param input a string to be manipulated
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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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+ public static String getSuffix(String input) {
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+
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+ return input.substring(input.length() - 3, input.length());
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}
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/**
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- * @param inputValue the value to be compared
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+ * @param inputValue the value to be compared
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* @param comparableValue the value to be compared against
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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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+ public static Boolean compareTwoStrings(String inputValue, String comparableValue) {
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+
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+ return inputValue.equalsIgnoreCase(comparableValue);
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}
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/**
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* @param inputValue the value input from user
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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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+ public static Character getMiddleCharacter(String inputValue) {
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+ int length;
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+ int position;
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+ if (inputValue.length() % 2 == 0) {
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+ position = inputValue.length() / 2 - 1;
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+ length = 2;
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+ } else {
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+ position = inputValue.length() / 2;
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+ length = 1;
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+ }
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+ return inputValue.charAt(position);
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}
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/**
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* @param spaceDelimitedString a string, representative of a sentence, containing spaces
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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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+ public static String getFirstWord(String spaceDelimitedString) {
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+
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+ String answer = "";
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+
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+ for (int i = 0; i < spaceDelimitedString.length(); i++) {
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+ if (spaceDelimitedString.charAt(i) == ' ') {
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+ answer = spaceDelimitedString.substring(0, i);
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+ }
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+ }
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+
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+ return answer;
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}
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+
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/**
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* @param spaceDelimitedString a string delimited by spaces
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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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+ public static String getSecondWord(String spaceDelimitedString) {
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+ String[] answer = spaceDelimitedString.split(" ");
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+
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+
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+ return answer[1];
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}
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+
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/**
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* @param stringToReverse
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* @return an identical string with characters in reverse order.
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*/
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- public static String reverse(String stringToReverse){
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- return null;
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+ public static String reverse(String stringToReverse) {
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+
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+ String reverse = "";
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+
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+ for (int i = stringToReverse.length() - 1; i >= 0; i--) {
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+ reverse = reverse + stringToReverse.charAt(i);
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+ }
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+ return reverse;
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}
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}
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