Implementation of array in JavaScript

  • Initializes a JavaScript array arr with values.
  • Accesses the element at index 0 using arr[0] and prints its value.
  • Modifies the element at index 0 by assigning a new value (9) to arr[0] and prints the modified value.

Javascript




let arr = [1, 2, 3, 4, 5];  // Initializing an array with values
 
// Accessing elements
console.log("Element at index 0:", arr[0]);
 
// Modifying elements
arr[0] = 9;
console.log("Modified element at index 0:", arr[0]);


Output

Element at index 0: 1
Modified element at index 0: 9

Implement Arrays in different Programming Languages

Arrays are one of the basic data structures that should be learnt by every programmer. Arrays stores a collection of elements, each identified by an index or a key. They provide a way to organize and access a fixed-size sequential collection of elements of the same type. In this article, we will learn about the basic use of array in most common languages like C, C++, Java, Python, etc.

Table of Content

  • What is an Array?
  • Implementation of array in C++:
  • Implementation of array in C:
  • Implementation of array in Java:
  • Implementation of array in Python:
  • Implementation of array in C#:
  • Implementation of array in JavaScript:
  • Pros and Cons of array:

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Implementation of array in C++:

Declares an integer array arr with a size of 5 and initializes it with values. Accesses the element at index 3 using arr[3] and prints its value. Modifies the element at index 3 by assigning a new value (15) to arr[3] and prints the modified value....

Implementation of array in C:

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Implementation of array in Java:

Declares an integer array arr with a size of 5 and initializes it with values. Accesses the element at index 2 using arr[2] and prints its value. Modifies the element at index 2 by assigning a new value (10) to arr[2] and prints the modified value....

Implementation of array in Python:

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Implementation of array in C#:

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Implementation of array in JavaScript:

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Pros and Cons of array:

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