learned how to sort arraylist objects

June Lee · June Lee · commit ec6b26361d46 · 2024-04-23T14:53:53.000-05:00
diff --git a/inheritance/testing-inheritance/exercises/src/main/java/CatInterface.java b/inheritance/testing-inheritance/exercises/src/main/java/CatInterface.java
@@ -0,0 +1,3 @@
+public interface CatInterface {
+
+}
diff --git a/inheritance/testing-inheritance/exercises/src/main/java/Catowner.java b/inheritance/testing-inheritance/exercises/src/main/java/Catowner.java
@@ -0,0 +1,3 @@
+public class Catowner {
+    
+}
diff --git a/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/ConeComparator.java b/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/ConeComparator.java
@@ -0,0 +1,15 @@
+package org.launchcode;
+import java.util.Comparator;
+public class ConeComparator implements Comparator<Cone>{
+
+    @Override
+    public int compare(Cone cone1, Cone cone2) {
+        if (cone1.getCost() - cone2.getCost() < 0) {
+            return -1;
+        } else if (cone1.getCost() - cone2.getCost() > 0) {
+            return 1;
+        } else {
+            return 0;
+        }
+    }
+}
diff --git a/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/FlavorComparator.java b/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/FlavorComparator.java
@@ -0,0 +1,10 @@
+package org.launchcode;
+
+import java.util.Comparator;
+
+public class FlavorComparator implements Comparator<Flavor> {
+    @Override
+    public int compare(Flavor flavor1, Flavor flavor2) {
+        return flavor1.getName().compareTo(flavor2.getName());
+    }
+}
diff --git a/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/Ingredient.java b/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/Ingredient.java
@@ -39,7 +39,7 @@ public void setAllergens(ArrayList<String> allergens) {
 
     @Override
     public String toString() {
-        return "Name: " + name + "\n" +
+        return  "\n" + "Name: " + name + "\n" +
                 "Cost: $" + cost + "\n" +
                 "Allergens: " + allergens + "\n";
     }
diff --git a/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/Main.java b/interfaces/exercises/ice-cream-exercises/src/main/java/org/launchcode/Main.java
@@ -1,17 +1,26 @@
 package org.launchcode;
 
 import java.util.ArrayList;
+import java.util.Comparator;
 
 public class Main {
     public static void main(String[] args) {
         Case menu = new Case();
         ArrayList<Flavor> flavors = menu.getFlavors();
         ArrayList<Cone> cones = menu.getCones();
+        System.out.printf(flavors.toString());
+        //System.out.printf(cones.toString());
+
 
         // TODO: Use a Comparator class to sort the 'flavors' array alphabetically by the 'name' field.
+        Comparator comparator = new FlavorComparator();
+        flavors.sort(comparator);
+        //flavors.sort(new FlavorComparator());
+        System.out.println(flavors.toString());
 
         // TODO: Use a Comparator class to sort the 'cones' array in increasing order by the 'cost' field.
-
+        cones.sort(new ConeComparator());
+        System.out.println(cones.toString());
         // TODO: Print the 'flavors' and 'cones' lists (in a clear manner) to verify the sorting.
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+public interface CatInterface {`
	`2`	`+`
	`3`	`+}`
Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,7 @@ public void setAllergens(ArrayList<String> allergens) {`
`39`	`39`
`40`	`40`	`@Override`
`41`	`41`	`public String toString() {`
`42`		`- return "Name: " + name + "\n" +`
	`42`	`+ return "\n" + "Name: " + name + "\n" +`
`43`	`43`	`"Cost: $" + cost + "\n" +`
`44`	`44`	`"Allergens: " + allergens + "\n";`
`45`	`45`	`}`