submit part03_11->15

truongvantuan · Feb 8, 2021 · 52ce201 · 52ce201
1 parent 47af361
commit 52ce201
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Showing 6 changed files with 93 additions and 8 deletions.
diff --git a/.gitignore b/.gitignore
@@ -71,4 +71,9 @@
 /part03-Part03_07.RememberTheseNumbers/target/
 /part03-Part03_08.OnlyTheseNumbers/target/
 /part03-Part03_09.GreatestInList/target/
-/part03-Part03_10.IndexOf/target/
+/part03-Part03_10.IndexOf/target/
+/part03-Part03_11.IndexOfSmallest/target/
+/part03-Part03_12.SumOfAList/target/
+/part03-Part03_13.AverageOfAList/target/
+/part03-Part03_14.OnTheList/target/
+/part03-Part03_15.PrintInRange/target/
diff --git a/part03-Part03_11.IndexOfSmallest/src/main/java/IndexOfSmallest.java b/part03-Part03_11.IndexOfSmallest/src/main/java/IndexOfSmallest.java
@@ -9,11 +9,41 @@ public static void main(String[] args) {
 
         // implement here a program that reads user input
         // until the user enters 9999
-
         // after that, the program prints the smallest number
         // and its index -- the smallest number
         // might appear multiple times
+        ArrayList<Integer> list = new ArrayList<>();
+        int smallest;
+        while (true) {
+            int input = scanner.nextInt();
 
-
+            if (input == 9999) {
+                smallest = list.get(0);
+                break;
+            }
+
+            list.add(input);
+        }
+
+        smallest = smallestKey(list);
+
+        System.out.println("Smallest number: " + smallest);
+
+        for (int i = 0; i < list.size(); i++) {
+            if (smallest == list.get(i)) {
+                System.out.println("Found at index: " + i);
+            }
+        }
     }
+
+    public static int smallestKey(ArrayList<Integer> list) {
+        int smallest = list.get(0);
+        for (int i = 1; i < list.size(); i++) {
+            if (smallest > list.get(i)) {
+                smallest = list.get(i);
+            }
+        }
+        return smallest;
+    }
+
 }
diff --git a/part03-Part03_12.SumOfAList/src/main/java/SumOfAList.java b/part03-Part03_12.SumOfAList/src/main/java/SumOfAList.java
@@ -17,8 +17,10 @@ public static void main(String[] args) {
             list.add(input);
         }
 
-        System.out.println("");
-
-        // toteuta listan lukujen summan laskeminen tänne
+        int sum = 0;
+        for (Integer value : list) {
+            sum += value;
+        }
+        System.out.println("Sum: " + sum);
     }
 }
diff --git a/part03-Part03_13.AverageOfAList/src/main/java/AverageOfAList.java b/part03-Part03_13.AverageOfAList/src/main/java/AverageOfAList.java
@@ -11,6 +11,18 @@ public static void main(String[] args) {
         // adding them on a list until user gives -1.
         // Then it computes the average of the numbers on the list
         // and prints it.
-
+        int sum = 0;
+        ArrayList<Integer> listInt = new ArrayList<>();
+
+        while (true) {
+            int value = Integer.valueOf(scanner.nextLine());
+            if (value == -1) {
+                break;
+            }
+            listInt.add(value);
+            sum += value;
+        }
+
+        System.out.println("Average: " + (double) sum / listInt.size());
     }
 }
diff --git a/part03-Part03_14.OnTheList/src/main/java/OnTheList.java b/part03-Part03_14.OnTheList/src/main/java/OnTheList.java
@@ -8,6 +8,7 @@ public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
 
         ArrayList<String> list = new ArrayList<>();
+
         while (true) {
             String input = scanner.nextLine();
             if (input.equals("")) {
@@ -17,5 +18,18 @@ public static void main(String[] args) {
             list.add(input);
         }
 
+        System.out.print("Search for? ");
+        String key = scanner.nextLine();
+
+        boolean found = list.contains(key);
+
+        System.out.println(found);
+
+        if (found) {
+            System.out.println(key + " was found!");
+        } else {
+            System.out.println(key + " was not found!");
+
+        }
     }
 }
diff --git a/part03-Part03_15.PrintInRange/src/main/java/PrintInRange.java b/part03-Part03_15.PrintInRange/src/main/java/PrintInRange.java
@@ -5,6 +5,28 @@ public class PrintInRange {
 
     public static void main(String[] args) {
         // Try your method here
+
+        ArrayList<Integer> numbers = new ArrayList<>();
+        numbers.add(3);
+        numbers.add(2);
+        numbers.add(6);
+        numbers.add(-1);
+        numbers.add(5);
+        numbers.add(1);
+
+        System.out.println("The numbers in the range [0, 5]");
+        printNumbersInRange(numbers, 0, 5);
+
+        System.out.println("The numbers in the range [3, 10]");
+        printNumbersInRange(numbers, 3, 10);
     }
-
+
+    public static void printNumbersInRange(ArrayList<Integer> numbers, int lowerLimit, int upperLimit) {
+        for (Integer item : numbers) {
+            if (item >= lowerLimit && item <= upperLimit) {
+                System.out.println(item);
+            }
+        }
+    }
+
 }