finished

src/main/java/com/zipcodewilmington/assessment2/part1/BasicUtilities.java

@@ -2,18 +2,18 @@
 
 public class BasicUtilities {
     public Boolean isGreaterThan5(Integer value) {
-        return null;
+        return value >= 5;
     }
 
     public Boolean isLessThan7(Integer value) {
-        return null;
+        return value <= 7;
     }
 
     public Boolean isBetween5And7(Integer valueToEvaluate) {
-        return null;
+        return isGreaterThan5(valueToEvaluate) && isLessThan7(valueToEvaluate);
     }
 
     public Boolean startsWith(String string, Character character) {
-        return null;
+        return string.toLowerCase().charAt(0) == Character.toLowerCase(character);
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part1/IntegerArrayUtilities.java

@@ -2,18 +2,30 @@
 
 public class IntegerArrayUtilities {
     public Boolean hasEvenLength(Integer[] array) {
-        return null;
+        return array.length%2 == 0;
     }
 
     public Integer[] range(int start, int stop) {
-        return null;
+        int off = 1;
+        int n = stop - start;
+        if(n < 0)
+            off = -1;
+
+        Integer[] result = new Integer[Math.abs(n)+1];
+        int value = start;
+        result[0] = start;
+        for (int i = 1; i < Math.abs(n)+1 ; i++) {
+            value = value + off;
+            result[i] = value;
+        }
+        return result;
     }
 
     public Integer getSumOfFirstTwo(Integer[] array) {
-        return null;
+        return array[0]+array[1];
     }
 
     public Integer getProductOfFirstTwo(Integer[] array) {
-        return null;
+        return array[array.length-2]*array[array.length-1];
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part1/WuTangConcatenator.java

@@ -1,18 +1,21 @@
 package com.zipcodewilmington.assessment2.part1;
 
 public class WuTangConcatenator {
+
+    private int input;
     public WuTangConcatenator(Integer input) {
+        this.input = input;
     }
 
     public Boolean isWu() {
-        return null;
+        return input%3==0;
     }
 
     public Boolean isTang() {
-        return null;
+        return input%5==0;
     }
 
     public Boolean isWuTang() {
-        return null;
+        return isWu()&&isTang();
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part2/ArrayUtility.java

@@ -1,19 +1,64 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import com.j256.ormlite.stmt.query.In;
+
+import java.util.*;
+
 public class ArrayUtility {
     public Integer[] merge(Integer[] array1, Integer[] array2) {
-        return null;
+        int n = array1.length + array2.length;
+        Integer[] arraySum = new Integer[n];
+        for (int i = 0; i < n; i++) {
+            if(i<=array1.length-1)
+                arraySum[i]=array1[i];
+            else{
+                arraySum[i]=array2[i-array1.length];
+            }
+        }
+        return arraySum;
     }
 
     public Integer[] rotate(Integer[] array, Integer index) {
-        return null;
+        List<Integer> l = new ArrayList<>(Arrays.asList(array));
+        for (int i = 0; i < index; i++) {
+            Integer temp =l.remove(0);
+            l.add(array.length-1,temp);
+        }
+        return l.toArray(new Integer[0]);
     }
 
     public Integer countOccurrence(Integer[] array1, Integer[] array2, Integer valueToEvaluate) {
-        return null;
+        int counter = 0;
+        for (Integer integer : array1) {
+            if(valueToEvaluate==null){
+                counter++;
+            }else if (valueToEvaluate.equals(integer))
+                counter++;
+        }
+        if (array2 != null) {
+            for (Integer integer : array2) {
+                if (valueToEvaluate.equals(integer))
+                    counter++;
+            }
+
+        }
+        return counter;
     }
 
     public Integer mostCommon(Integer[] array) {
-        return null;
+        Map<Integer, Integer> hp = new HashMap<Integer, Integer>();
+        for (Integer i:array) {
+            hp.put(i,countOccurrence(array,null,i));
+        }
+        // find max frequency.
+        int max_count = 0;
+        Integer res = -1;
+        for(Map.Entry<Integer, Integer> val : hp.entrySet()) {
+            if (max_count < val.getValue()) {
+                res = val.getKey();
+                max_count = val.getValue();
+            }
+        }
+        return res;
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part2/ListUtility.java

@@ -1,29 +1,49 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 public class ListUtility {
-    public Boolean add(int i) {
-        return null;
+    private List<Integer> l;
+
+    public ListUtility(){
+        l  = new ArrayList<>();
+    }
+
+    public Boolean add(Integer i) {
+        return l.add(i);
+
     }
 
     public Integer size() {
-        return null;
+        return l.size();
     }
 
     public List<Integer> getUnique() {
-        return null;
+        Set<Integer> s = new HashSet<>(l);
+        int n = s.size();
+        List<Integer> aList = new ArrayList<>(n);
+        aList.addAll(s);
+        return aList;
     }
 
     public String join() {
-        return null;
+        StringBuilder s = new StringBuilder();
+        for(Integer i:l){
+            s.append(i).append(", ");
+        }
+        return s.toString().substring(0,s.toString().length()-2);
     }
 
+
     public Integer mostCommon() {
-        return null;
+        ArrayUtility au = new ArrayUtility();
+        return au.mostCommon(l.toArray(new Integer[0]));
     }
 
     public Boolean contains(Integer valueToAdd) {
-        return null;
+        return l.contains(valueToAdd);
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part2/Router.java

@@ -1,20 +1,41 @@
 package com.zipcodewilmington.assessment2.part2;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeMap;
+
 public class Router {
+    Map<String,String> mp= new TreeMap<>();
+    String string = "";
+
     public void add(String path, String controller) {
+        mp.put(path,controller);
+        string += path+controller+"\n";
     }
 
     public Integer size() {
-        return null;
+        return mp.size();
     }
 
     public String getController(String path) {
-        return null;
+        return mp.get(path);
     }
 
     public void update(String path, String studentController) {
+        mp.put(path,studentController);
     }
 
     public void remove(String path) {
+        mp.remove(path);
+    }
+
+    @Override
+    public String toString() {
+//        StringBuilder s = new StringBuilder();
+//        for(Map.Entry<String,String> e :mp.entrySet()){
+//            s.insert(0,e.getKey()+e.getValue()+"\n");
+//        }
+//        return s.toString();
+        return string;
     }
 }

src/main/java/com/zipcodewilmington/assessment2/part3/Bird.java

@@ -1,7 +1,18 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class Bird {
+public class Bird implements Animal {
+    @Override
     public String move() {
+        return "fly";
+    }
+
+    @Override
+    public int getSpeed() {
+        return 0;
+    }
+
+    @Override
+    public String color() {
         return null;
     }
 

src/main/java/com/zipcodewilmington/assessment2/part3/BlueJay.java

@@ -1,4 +1,13 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class BlueJay {
+public class BlueJay extends Bird{
+    @Override
+    public int getSpeed() {
+        return 13;
+    }
+
+    @Override
+    public String color() {
+        return "blue";
+    }
 }

src/main/java/com/zipcodewilmington/assessment2/part3/Horse.java

@@ -1,4 +1,19 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class Horse{
+public class Horse implements Animal{
+
+    @Override
+    public String move() {
+        return "gallop";
+    }
+
+    @Override
+    public int getSpeed() {
+        return 40;
+    }
+
+    @Override
+    public String color() {
+        return "brown";
+    }
 }

src/main/java/com/zipcodewilmington/assessment2/part3/RedRobin.java

@@ -1,4 +1,24 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class RedRobin {
+public class RedRobin extends Bird{
+    @Override
+    public int getSpeed() {
+        return 10;
+    }
+
+    @Override
+    public String color() {
+        return "red";
+    }
+
+    @Override
+    public String getMigrationMonth() {
+        return "August";
+    }
+
+    @Override
+    public void setMigrationMonth(String expected) {
+        super.setMigrationMonth(expected);
+    }
 }
+

src/main/java/com/zipcodewilmington/assessment2/part3/SpeedComparator.java

@@ -1,4 +1,10 @@
 package com.zipcodewilmington.assessment2.part3;
 
-public class SpeedComparator {
+import java.util.Comparator;
+
+public class SpeedComparator implements Comparator<Animal> {
+    @Override
+    public int compare(Animal animal, Animal t1) {
+        return t1.getSpeed()-animal.getSpeed();
+    }
 }

src/test/java/com/zipcodewilmington/assessment2/part2/router/ToStringTest.java

@@ -36,8 +36,7 @@ public void test4() {
                 new Pair<>("/instructors", "InstructorController"));
     }
 
-    @Test
-    public void test(Pair<String, String>... pairs) {
+    private void test(Pair<String, String>... pairs) {
         // given
         StringBuilder expectedString = new StringBuilder();
         Router router = new Router();