Java Console Tool

src/main/java/org/example/fromrazan/Javaconsol/InputParser.java

@@ -0,0 +1,26 @@
+package org.example.fromrazan.Javaconsol;
+
+public class InputParser {
+
+    public static int[] parse(String input) {
+
+        if (input == null || input.trim().isEmpty()) {
+            throw new IllegalArgumentException("THE INPUT IS EMPTY : ");
+        }
+
+        String[] parts = input.split(",");
+        int[] numbers = new int[parts.length];
+
+        for (int i = 0; i < parts.length; i++) {
+
+            try {
+                numbers[i] = Integer.parseInt(parts[i].trim());
+            } catch (NumberFormatException e) {
+                throw new IllegalArgumentException(" THE VALUE IS INCORRECT" + parts[i]);
+            }
+        }
+
+        return numbers;
+
+    }
+}

src/main/java/org/example/fromrazan/Javaconsol/JavaConsol.java

@@ -0,0 +1,80 @@
+package org.example.fromrazan.Javaconsol;
+
+
+import java.util.Scanner;
+
+
+
+
+
+public class JavaConsol {
+
+    public static void main(String[] args) {
+
+        String input = null;
+        String algorithm = "selection"; //default
+
+        //read CLI arguments
+
+        for (String arg : args) {
+            if (arg.startsWith("--algorithm--")) {
+                algorithm = arg.split("=")[1].toLowerCase();
+            } else {
+                input = arg;
+            }
+        }
+
+//STIDIN ---> use if there are no input
+
+        if (input == null) {
+            Scanner scanner = new Scanner(System.in);
+            System.out.println("enter the numbers: ");
+            input = scanner.nextLine();
+        }
+
+        try {
+            //parse
+            int[] numbers = InputParser.parse(input);
+
+            Sorter sorter = new Sorter();
+
+            //choose algorithm
+
+            if (algorithm.equals("bubble")) {
+                sorter.BubbleSort(numbers);
+
+            } else {
+                sorter.SelecionSort(numbers);
+
+            }
+
+            //get lowest three
+            int[] result = sorter.getLowestThree(numbers);
+
+
+            //output
+            System.out.println("result : ");
+            for (int num : result) {
+                System.out.println(num);
+
+            }
+
+
+        } catch (IllegalArgumentException e) {
+            System.out.println("error: " + e.getMessage());
+        }
+
+    }
+
+}
+
+
+
+
+
+
+
+
+
+
+

src/main/java/org/example/fromrazan/Javaconsol/Sorter.java

@@ -0,0 +1,59 @@
+package org.example.fromrazan.Javaconsol;
+
+public class Sorter {
+
+    public void SelecionSort(int[] arr) {
+        for (int i = 0; i < arr.length - 1; i++) {
+            int minIndex = i;
+
+            for (int j = i + 1; j < arr.length; j++) {
+                if (arr[j] < arr[minIndex]) {
+                    minIndex = j;
+                }
+            }
+
+
+            int temp = arr[minIndex];
+            arr[minIndex] = arr[i];
+            arr[i] = temp;
+        }
+    }
+
+    // bubble sort
+
+
+    public  void BubbleSort(int[] arr) {
+        boolean swapped;
+
+        for (int i = 0; i < arr.length - 1; i++) {
+            swapped = false;
+
+            for (int j = 0; j < arr.length - i - 1; j++) {
+                if (arr[j] > arr[j + 1]) {
+
+
+                    int temp = arr[j];
+                    arr[j] = arr[j + 1];
+                    arr[j + 1] = temp;
+
+                    swapped = true;
+
+                }
+            }
+
+            if (!swapped) break;
+        }
+    }
+
+
+    // get lowest
+
+    public  int[] getLowestThree(int[] data) {
+
+        if (data.length < 3) {
+            throw new IllegalArgumentException("enter at least 3 numbers");
+        }
+
+        return new int[]{data[0], data[1], data[2]};
+    }
+}