StringUtils

src/main/java/rocks/zipcode/io/quiz3/arrays/TicTacToe.java

@@ -4,8 +4,47 @@ package rocks.zipcode.io.quiz3.arrays;
  * @author leon on 09/12/2018.
  */
 public class TicTacToe {
+    private String[][] board;
+    private Integer value;
+    private Integer rowIndex;
+    private Integer columnIndex;
+
+    public TicTacToe(){}
 
     public TicTacToe(String[][] board) {
+        this.board = board;
+    }
+
+    public String[][] getBoard() {
+        return board;
+    }
+
+    public void setBoard(String[][] board) {
+        this.board = board;
+    }
+
+    public Integer getValue() {
+        return value;
+    }
+
+    public void setValue(Integer value) {
+        this.value = value;
+    }
+
+    public Integer getRowIndex() {
+        return rowIndex;
+    }
+
+    public void setRowIndex(Integer rowIndex) {
+        this.rowIndex = rowIndex;
+    }
+
+    public Integer getColumnIndex() {
+        return columnIndex;
+    }
+
+    public void setColumnIndex(Integer columnIndex) {
+        this.columnIndex = columnIndex;
     }
 
     public String[] getRow(Integer value) {

src/main/java/rocks/zipcode/io/quiz3/arrays/WaveGenerator.java

@@ -5,6 +5,23 @@ package rocks.zipcode.io.quiz3.arrays;
  */
 public class WaveGenerator {
     public static String[] wave(String str) {
-        return null;
+        String[] s = new String[str.length()];
+        for (String s1 : s){
+            s1 = str;
+            System.out.println(s1);
+        }
+
+        String big = "";
+
+        for (int j = 0; j < s.length; j++) {
+            for (int i = 0; i < str.length() ; i++) {
+                s[i].toLowerCase();
+                if (i == j){
+                    String.valueOf(s[i].charAt(j)).toUpperCase();
+                }
+            }
+        }
+
+        return s;
     }
 }

src/main/java/rocks/zipcode/io/quiz3/fundamentals/StringUtils.java

@@ -5,10 +5,18 @@ package rocks.zipcode.io.quiz3.fundamentals;
  */
 public class StringUtils {
     public static String capitalizeNthCharacter(String str, Integer indexToCapitalize) {
-        return null;
+        String s =
+                str.substring(0, indexToCapitalize) + String.valueOf(str.charAt(indexToCapitalize)).toUpperCase() + str.substring(indexToCapitalize + 1);
+
+           return s;
     }
 
     public static Boolean isCharacterAtIndex(String baseString, Character characterToCheckFor, Integer indexOfString) {
-        return null;
+        baseString = baseString.toLowerCase();
+        if (baseString.charAt(indexOfString) == characterToCheckFor){
+
+            return true;
+        }
+        return false;
     }
 }