Junit for sort stack

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src/main/java"/>
+	<classpathentry kind="src" path="src/main/test"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/5"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="owner.project.facets" value="java"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Algorithms-and-Data-Structures-in-Java</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding/<project>=UTF-8

.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=1.8

.settings/org.eclipse.wst.common.project.facet.core.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <installed facet="java" version="1.8"/>
+</faceted-project>

bin/com/rampatra/bits/README.md

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+# Bits
+
+## Basic Operators
+
+#### AND:
+
+| x | y | x `&` y |
+----|---|:-------:|
+| 0 | 0 | 0       |
+| 0 | 1 | 0       |
+| 1 | 0 | 0       |
+| 1 | 1 | 1       |
+
+#### OR:
+
+| x | y | x `\|` y |
+|---|---|:--------:|
+| 0 | 0 | 0        |
+| 0 | 1 | 1        |
+| 1 | 0 | 1        |
+| 1 | 1 | 1        |
+
+#### XOR:
+
+| x | y | x `^` y |
+|---|---|:-------:|
+| 0 | 0 | 0       |
+| 0 | 1 | 1       |
+| 1 | 0 | 1       |
+| 1 | 1 | 0       |
+
+
+## Shifts
+
+_Disclaimer: We are taking `byte` (8 bits) as our datatype to explain the
+ concepts instead of the usual integer._
+
+#### 1. Left Shift (<<):
+
+1 << 3 = 8
+
+> 00000001 << 3 = 00001000
+
+#### 2. Right Shift:
+
+**Two types:**
+
+**a. Signed Right Shift (>>):**
+
+64 >> 2 = 16
+
+> 001000000 >> 2 = 00010000
+
+-64 >> 2 = -16
+
+> 111000000 >> 2 = 11110000 
+
+**b. Unsigned Right Shift (>>>):**
+
+64 >>> 2 = 16
+
+> 001000000 >>> 2 = 00010000
+
+-64 >>> 2 = 56
+
+> 111000000 >>> 2 = 00111000
+
+## Helpful Masks
+
+#### 1. Set the 4th bit from right:
+
+```java
+byte mask = 1 << 3;
+```
+
+Explanation, 
+
+```
+00000001 << 3 = 00001000
+```
+
+#### 2. Set the first 3 bits from right:
+
+```java
+byte mask = (1 << 3) - 1;
+```
+
+Explanation,
+
+```
+00000001 << 3 = 00001000
+
+00001000 - 00000001 = 00000111
+```
+
+#### 3. Mask with alternating 1010...10
+
+```java
+byte mask = 0x55;
+```
+
+#### 4. Mask with alternating 0101...01
+
+```java
+byte mask = 0xaa;
+```
+
+#### 5. Unset the 4th bit
+
+```java
+byte mask = 1 << 3;
+
+byte num = num & ~mask;
+```
+
+Explanation,
+
+```
+00000001 << 3 = 00001000
+
+~(00001000) = 11110111
+```

bin/com/rampatra/database/README.md

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+# Relational Database (WIP)
+
+A __relational database__ is a digital database based on
+the [relational model](https://en.wikipedia.org/wiki/Relational_model) of
+data. In simple words, it is a collection of data items with pre-defined 
+relationships between them. These items are organized as a set of tables,
+with columns and rows. Each column stores some specific attribute of an object/entity and the
+row represents a specific object/entity.
+
+A software system used to maintain relational databases is a __relational
+database management system (RDBMS)__, for e.g., MySQL, Oracle DB, PostgreSQL, etc. 
+Virtually all relational database systems use __SQL (Structured Query Language)__ 
+for querying and maintaining the database.
+
+## Basic Definitions
+
+1. Primary Key
+
+2. Candidate Key
+
+3. Composite Key
+
+4. Prime/Non-prime attribute
+
+## Types of SQL commands
+
+1. DDL
+2. DML
+3. DCL
+4. TCL
+
+| Type	| Command List      |
+|-------|-------------------|
+| DDL	|   CREATE          |
+|       |   DROP            |
+|       |  ALTER            |
+|       |  RENAME           |
+|       |  TRUNCATE         |
+|       |                   |
+| DML	|   SELECT          |
+|       |    INSERT         |
+|       |    UPDATE         |
+|       |    DELETE         |
+|       |                   |
+| DCL	| GRANT             |
+|       |  REVOKE           |
+|       |                   |
+| TCL	| START TRANSACTION |
+|       |  COMMIT           |
+|       |  ROLLBACK         |
+
+## Types of Joins
+
+1. Inner Join
+2. Left Outer Join
+3. Right Outer Join
+4. Full Join
+5. Self Join
+
+## Normalization Forms
+
+1. 1NF
+2. 2NF
+3. 3NF
+4. BCNF
+5. 4NF
+6. 5NF
+
+#### 1NF
+
+Required conditions:
+
+a. All values should be atomic (non-breakable).  
+b. There should be a candidate key or a composite key (basically you should be able to uniquely identify all records in the table).
+
+