Arrays and Strings
7 Topics
1
Arrays
Fixed-size arrays in C++
Basic data structure
2
Multidimensional Arrays
2D and 3D arrays for matrices and grids
Matrix problems are extremely common in interviews — 2D grid traversal, dynamic programming tables, image processing
3
C-Style Strings
Null-terminated character arrays and cstring functions
Understanding legacy codebases and embedded systems; knowing why std::string exists
4
std::string
C++ string class
Modern string handling
5
String Operations
Common string manipulation techniques for real-world and interview problems
String manipulation is among the most common interview topics — reversals, parsing, searching, and building are tested constantly
6
std::array
Fixed-size, STL-compatible array with no overhead over C arrays
The modern replacement for C arrays — demonstrates knowledge of zero-cost abstractions
7
std::string_view (C++17)
Non-owning, zero-copy string reference for efficient read-only access
Performance optimization — shows understanding of ownership, views, and avoiding unnecessary copies