Array Data Structure: Complete Guide and Practice Problems
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Questions and Answers

What is an array in programming?

  • A single element in a program
  • A data structure consisting of a collection of elements (correct)
  • A function for input validation
  • A type of loop

How are elements in an array uniquely identified?

  • By their size
  • By their value
  • By their index in the array (correct)
  • By their position in memory

What do arrays and lists describe in programming?

  • Input/output operations
  • Aggregates of values (correct)
  • Control structures
  • Mathematical functions

In what way can an array be compared to a staircase?

<p>Top-level view where each element can be uniquely identified by their index (C)</p> Signup and view all the answers

What is the main characteristic of an array?

<p>Each element has an index for identification (A)</p> Signup and view all the answers

Study Notes

Arrays in Programming

  • An array is a data structure that stores a collection of elements, each identified by an index or key.
  • Elements in an array are uniquely identified by their index or subscript, which is a numerical value that corresponds to a specific position in the array.
  • Arrays and lists describe a collection of elements that are stored and manipulated as a single unit in programming.
  • An array can be compared to a staircase, where each step represents an element in the array, and the index or subscript corresponds to the step number.
  • The main characteristic of an array is that it stores a fixed-size, homogeneous collection of elements, meaning all elements must be of the same data type.

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Explore a comprehensive guide to the array data structure in DSA, including practice problems and quizzes. Understand how arrays work by relating them to a staircase where each element can be uniquely identified by its index.

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