STL Containers Programs

C++ Standard Template Library (STL) Containers: Vector, Map, Set, Stack, Queue

10 program solutions

Program Solutions

Vector Basics

Basic Vector Operations in C++

Vector Operations

Advanced Vector Operations in C++

2D Vector

2D Vector (Vector of Vectors) in C++

Map Basics

Basic Map Operations in C++

Set Basics

Basic Set Operations in C++

Unordered Map and Set

Unordered Map and Unordered Set in C++

Stack Basics

Basic Stack Operations in C++

Queue Basics

Basic Queue Operations in C++

Priority Queue

Priority Queue in C++

Deque (Double-ended Queue)

Deque Operations in C++

Topic Strategy: STL Containers Programs

This topic is best practiced through repetition with variation. Solve each program, then modify constraints and test alternate approaches so you understand why one solution performs better than another.

During interviews, explain the approach before coding: input assumptions, core logic, complexity, and edge cases. Clear reasoning often matters as much as final code correctness.

Once comfortable, time-box each question and target clean, readable code with meaningful variable names and a quick dry run explanation.