Solutions for challenges 1-5

Author: memosworld

src/memos/world/Main.java

@@ -0,0 +1,9 @@
+package memos.world._01_Welcome_To_Java;
+
+// https://www.hackerrank.com/challenges/welcome-to-java/problem
+public class Solution {
+    public static void main(String[] args) {
+        System.out.println("Hello, World.");
+        System.out.println("Hello, Java.");
+    }
+}

src/memos/world/_01_Welcome_To_Java/Solution.java

@@ -0,0 +1,17 @@
+package memos.world._02_Java_Stdin_and_Stdout_I;
+
+import java.util.*;
+
+// https://www.hackerrank.com/challenges/java-stdin-and-stdout-1/problem
+public class Solution {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        int a = scanner.nextInt();
+        int b = scanner.nextInt();
+        int c = scanner.nextInt();
+
+        System.out.println(a);
+        System.out.println(b);
+        System.out.println(c);
+    }
+}

src/memos/world/_02_Java_Stdin_and_Stdout_I/Solution.java

@@ -0,0 +1,36 @@
+package memos.world._03_Java_If_Else;
+
+import java.io.*;
+import java.math.*;
+import java.security.*;
+import java.text.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.regex.*;
+
+// https://www.hackerrank.com/challenges/java-if-else/problem
+public class Solution {
+    private static final Scanner scanner = new Scanner(System.in);
+
+    public static void main(String[] args) {
+        int N = scanner.nextInt();
+        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
+
+        scanner.close();
+
+        if (N % 2 == 1) {
+            System.out.println("Weird");
+        } else {
+            if (N >= 2 && N <= 5) {
+                System.out.println("Not Weird");
+            } else if (N >= 6 && N <= 20) {
+                System.out.println("Weird");
+            } else if (N > 20) {
+                System.out.println("Not Weird");
+            }
+        }
+    }
+}
+
+
+

src/memos/world/_03_Java_If_Else/Solution.java

@@ -0,0 +1,18 @@
+package memos.world._04_Java_Stdin_and_Stdout_II;
+
+import java.util.Scanner;
+
+// https://www.hackerrank.com/challenges/java-stdin-stdout/problem
+public class Solution {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        int i = scanner.nextInt();
+        double d = scanner.nextDouble();
+        scanner.nextLine();
+        String s = scanner.nextLine();
+
+        System.out.println("String: " + s);
+        System.out.println("Double: " + d);
+        System.out.println("Int: " + i);
+    }
+}

src/memos/world/_04_Java_Stdin_and_Stdout_II/Solution.java

@@ -0,0 +1,18 @@
+package memos.world._05_Java_Output_Formatting;
+
+import java.util.Scanner;
+
+// https://www.hackerrank.com/challenges/java-output-formatting/problem
+public class Solution {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("================================");
+        for (int i = 0; i < 3; i++) {
+            String s1 = scanner.next();
+            int x = scanner.nextInt();
+            System.out.printf("%-15s%03d\n", s1, x);
+        }
+        System.out.println("================================");
+    }
+}