Sorting Algorithms

Internal

• Data Structures and Algorithms

Overview

Many programs use sorting as an intermediate step, and that is why sorting is considered a fundamental operation in computer science.

The sorting problem if formally defined as follows: given a sequence of n numbers (a₁, a₂, ... a_n) provided as input, the algorithm must produce as output a permutation (reordering) (a^'₁, a^'₂, ... a^'_n) of the input sequence such that a^'₁ ≤ a^'₂ ≤ ... ≤ a^'_n. A specific input sequence is called an instance of the sorting problem.

• Sorting
  • Comparison Sort. Comparison sort algorithm class. Know that comparison sort cannot do better than n ln n. Proof in a separate article.
  • Non-comparison Sort
  • Sorting algorithms characteristics (in-place, stability)