🟦 TypeScript Problem Solving

A collection of TypeScript problem-solving exercises completed during a conceptual TypeScript session.

This project focuses on practicing important TypeScript concepts such as type annotations, interfaces, union types, arrays, functions, conditional logic, and object handling.

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📚 Problems Included

This project contains solutions for the following 9 TypeScript problems:

1️⃣ Ticket Price Calculator

Determines the ticket price based on a person's age.

Concepts used:

• Function parameters
• Type annotations
• Conditional statements
• Return types

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2️⃣ Stock Status Checker

Checks the available stock quantity and returns an appropriate stock status.

Examples include:

• Out of Stock
• Almost Sold Out
• Available
• In Stock

Concepts used:

• Conditional statements
• Comparison operators
• Function return types

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3️⃣ User Profile Formatter

Uses a User interface to format user information into a readable profile message.

User information includes:

• Name
• Age
• City

Concepts used:

• Interfaces
• Object types
• Functions
• Template literals

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4️⃣ Shopping Cart Total Calculator

Calculates the total price of products inside a shopping cart.

Each product contains:

• Name
• Price

The solution uses the reduce() method to calculate the total.

Concepts used:

• Arrays
• Object types
• reduce()
• Type annotations

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5️⃣ Student Result Calculator

Calculates a student's average marks and determines whether the student has passed or failed.

The returned result includes:

• Student name
• Average marks
• Result status

Concepts used:

• Interfaces
• Arrays
• reduce()
• Conditional logic
• Object return types

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6️⃣ Role Permission Checker

Checks whether a user role has permission to edit.

Available roles include:

• admin
• editor
• viewer

Concepts used:

• Union types
• Boolean return values
• Conditional logic

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7️⃣ Product Finder

Finds products based on a selected category.

The solution uses the filter() method to return matching products.

Concepts used:

• Interfaces
• Arrays
• filter()
• Function parameters

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8️⃣ Patient Status Checker

Determines the status of different types of patients.

Patient types include:

• General patient
• Emergency patient

Emergency patients also include different emergency levels.

Concepts used:

• Interfaces
• Union types
• Type narrowing
• Conditional statements

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9️⃣ Transaction Processor

Processes banking transactions such as:

• Deposit
• Withdrawal

The function also checks whether the account has sufficient funds for a withdrawal.

Concepts used:

• Union types
• Object types
• Conditional logic
• Multiple return types

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🧠 Concepts Practiced

This project demonstrates the use of:

• Type annotations
• Function parameter types
• Function return types
• Interfaces
• Union types
• Arrays
• Objects
• Conditional statements
• Template literals
• reduce()
• filter()
• Type narrowing
• Boolean values
• TypeScript configuration

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📁 Project Structure

ts-problem/
│
├── src/
│   ├── 1.getTicketPrice.ts
│   ├── 2.getStockStatus.ts
│   ├── 3.formatUserProfile.ts
│   ├── 4.calculateCartTotal.ts
│   ├── 5.getStudentResult.ts
│   ├── 6.canEdit.ts
│   ├── 7.findProducts.ts
│   ├── 8.getPatientStatus.ts
│   ├── 9.processTransactions.ts
│   └── hello.ts
│
├── dist/
│
└── tsconfig.json