thethoughtcode · Jun 13, 2022 · Jun 13, 2022 · Jun 13, 2022
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -33,7 +33,6 @@ jobs:
             export SONAR_ARGS="$SONAR_ARGS -Dsonar.host.url=https://sonarcloud.io"
             export SONAR_ARGS="$SONAR_ARGS -Dsonar.coverage.jacoco.xmlReportPaths=$COVERAGE_FILE"
 
-
             mvn -B clean verify sonar:sonar $SONAR_ARGS
 
             # Submit Coverage Data to Codacy

diff --git a/.gitignore b/.gitignore
@@ -1,9 +1,50 @@
-# Compiled class file
+# These are some examples of commonly ignored file patterns.
+# You should customize this list as applicable to your project.
+# Learn more about .gitignore:
+#     https://www.atlassian.com/git/tutorials/saving-changes/gitignore
+
+# Node artifact files
+node_modules/
+dist/
+
+# Compiled Java class files
 *.class
 
-# Log file
+# Log files
 *.log
 
+# Package files
+*.jar
+
+# Maven
+target/
+dist/
+
+# JetBrains IDE
+.idea/
+
+# Unit test reports
+TEST*.xml
+
+# Generated by MacOS
+.DS_Store
+
+# Generated by Windows
+Thumbs.db
+
+# Applications
+*.app
+*.exe
+*.war
+
+# Large media files
+*.mp4
+*.tiff
+*.avi
+*.flv
+*.mov
+*.wmv
+
 # BlueJ files
 *.ctxt
 
@@ -21,3 +62,14 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+/target/
+
+# Eclipse specific paths
+**/.project
+**/.settings
+**/.classpath
+**/target
+
+# VS code
+.vscode
+
diff --git a/hackerrank/pom.xml b/hackerrank/pom.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>io.sampadadubey.java</groupId>
+        <artifactId>parent</artifactId>
+        <version>1.0</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hackerrank</artifactId>
+    <name>hackerrank</name>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.sampadadubey.java</groupId>
+            <artifactId>common</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java01WelcomeToJava.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java01WelcomeToJava.java
@@ -0,0 +1,9 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+public class Java01WelcomeToJava {
+
+    public void print() {
+        System.out.println("Hello, World.");
+        System.out.println("Hello, Java.");
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java02StdinStdout.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java02StdinStdout.java
@@ -0,0 +1,20 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java02StdinStdout {
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+
+        final int number1 = scanner.nextInt();
+        final int number2 = scanner.nextInt();
+        final int number3 = scanner.nextInt();
+
+        scanner.close();
+
+        System.out.printf("%d%n%d%n%d%n", number1, number2, number3);
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java03IfElse.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java03IfElse.java
@@ -0,0 +1,45 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import static io.sampadadubey.java.common.NumberConstants.FIVE;
+import static io.sampadadubey.java.common.NumberConstants.ONE;
+import static io.sampadadubey.java.common.NumberConstants.SIX;
+import static io.sampadadubey.java.common.NumberConstants.TWENTY;
+import static io.sampadadubey.java.common.NumberConstants.TWO;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java03IfElse {
+
+    static final String WEIRD = "Weird";
+
+    static final String NOT_WEIRD = "Not Weird";
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+
+        final int number = scanner.nextInt();
+
+        final String ans;
+
+        if (isOdd(number)) {
+            ans = WEIRD;
+        } else if (TWO <= number && number <= FIVE) {
+            ans = NOT_WEIRD;
+        } else if (SIX <= number && number <= TWENTY) {
+            ans = WEIRD;
+        } else {
+            ans = NOT_WEIRD;
+        }
+
+        System.out.println(ans);
+
+        scanner.close();
+    }
+
+    private boolean isOdd(final int number) {
+        // Bitwise AND(&) of Number and 1
+        return (number & ONE) == ONE;
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java04StdinStdout2.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java04StdinStdout2.java
@@ -0,0 +1,23 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java04StdinStdout2 {
+
+    public void run(final InputStream input) {
+
+        final Scanner scan = new Scanner(input);
+
+        final int intValue = scan.nextInt();
+        final double doubleValue = scan.nextDouble();
+        scan.nextLine();
+        final String stringValue = scan.nextLine();
+
+        System.out.println("String: " + stringValue);
+        System.out.println("Double: " + doubleValue);
+        System.out.println("Int: " + intValue);
+
+        scan.close();
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java05OutputFormatting.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java05OutputFormatting.java
@@ -0,0 +1,26 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import static io.sampadadubey.java.common.NumberConstants.THREE;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java05OutputFormatting {
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+
+        System.out.println("================================");
+
+        for (int index = 0; index < THREE; index++) {
+            final String string = scanner.next();
+            final int integer = scanner.nextInt();
+            System.out.printf("%-15s%03d\n", string, integer);
+        }
+
+        System.out.println("================================");
+
+        scanner.close();
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java06Loops1.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java06Loops1.java
@@ -0,0 +1,12 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import static io.sampadadubey.java.common.NumberConstants.TEN;
+
+public class Java06Loops1 {
+
+    public void run(final int number) {
+        for (int index = 1; index <= TEN; index++) {
+            System.out.printf("%d x %d = %d\n", number, index, number * index);
+        }
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java07Loops2.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java07Loops2.java
@@ -0,0 +1,41 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import static io.sampadadubey.java.common.NumberConstants.TWO;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java07Loops2 {
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+
+        final int lines = scanner.nextInt();
+
+        for (int index = 0; index < lines; index++) {
+
+            final int number1 = scanner.nextInt();
+            final int number2 = scanner.nextInt();
+            final int iterations = scanner.nextInt();
+
+            System.out.println(getSequence(number1, number2, iterations));
+        }
+
+        scanner.close();
+    }
+
+    public String getSequence(final int number1, final int number2, final int iterations) {
+
+        final StringBuilder result = new StringBuilder();
+
+        int value = number1;
+
+        for (int index = 0; index < iterations; index++) {
+            value = value + ((int) Math.pow(TWO, index) * number2);
+            result.append(Integer.toString(value)).append(' ');
+        }
+
+        return result.toString().trim();
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java08DataTypes.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java08DataTypes.java
@@ -0,0 +1,61 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java08DataTypes {
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+        final int totalInputs = scanner.nextInt();
+
+        scanner.nextLine();
+
+        for (int index = 0; index < totalInputs; index++) {
+
+            final String inputValue = scanner.nextLine();
+
+            checkType(inputValue);
+        }
+
+        scanner.close();
+    }
+
+    public void checkType(final String inputValue) {
+
+        try {
+
+            final long value = Long.parseLong(inputValue);
+
+            System.out.println(value + " can be fitted in:");
+
+            canFitInTypeByte(value);
+            canFitInTypeShort(value);
+            canFitInTypeInteger(value);
+
+            System.out.println("* long");
+
+        } catch (final NumberFormatException e) {
+            System.out.println(inputValue + " can't be fitted anywhere.");
+        }
+    }
+
+    private void canFitInTypeByte(final long value) {
+        if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
+            System.out.println("* byte");
+        }
+    }
+
+    private void canFitInTypeShort(final long value) {
+        if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
+            System.out.println("* short");
+        }
+    }
+
+    private void canFitInTypeInteger(final long value) {
+        if (value >= Integer.MIN_VALUE && value <= Integer.MAX_VALUE) {
+            System.out.println("* int");
+        }
+    }
+}
diff --git a/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java09EndOfFile.java b/hackerrank/src/main/java/io/sampadadubey/java/hackerrank/intro/Java09EndOfFile.java
@@ -0,0 +1,25 @@
+package io.sampadadubey.java.hackerrank.intro;
+
+import java.io.InputStream;
+import java.util.Scanner;
+
+public class Java09EndOfFile {
+
+    public void run(final InputStream input) {
+
+        final Scanner scanner = new Scanner(input);
+
+        int lineNo = 1;
+
+        while (scanner.hasNext()) {
+
+            final String line = scanner.nextLine();
+
+            System.out.println(lineNo + " " + line);
+
+            lineNo++;
+        }
+
+        scanner.close();
+    }
+}