Full Stack Developer – Screening Test Solutions

Author: Vijay Kumar
Language Used: Java

How to Run the Programs

Prerequisites

• Java JDK 8 or above must be installed
• Any Java IDE (VS Code, IntelliJ, Eclipse) OR command line

Problem Descriptions & Solutions

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Problem-1: Mini Calculator using Class

A simple calculator that performs:

• Addition
• Subtraction
• Multiplication
• Division

Inputs:

• a = double
• b = double
• operation = String

File: Problem-1.java

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Problem-2: Generate odd number series up to n terms

Example:

• Input: 4
• Output: 1, 3, 5, 7

File: Problem-2.java

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Problem-3: Generate odd number series up to nearest previous odd

Examples:

• a = 4 → output: 1, 3, 5
• a = 5 → output: 1, 3, 5
• a = 6 → output: 1, 3, 5

File: Problem-3.java

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Problem-4: Count multiples of 1–9 in a list

Example input: [1, 2, 8, 9, 12, 46, 76, 82, 15, 20, 30]

Output: {1: 11, 2: 8, 3: 4, 4: 4, 5: 3, 6: 2, 7: 0, 8: 1, 9: 1}