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Array Operations Notes summary
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Array Operations NotesArray Traversal
The process of accessing each element in an array, one by one.
Useful for performing operations on each element, like finding the sum or average of the
elements in an array.
Example:
arr = [1, 2, 3, 4, 5]
for i in arr:
print(i)
Array Insertion
The process of adding an element to an array at a specific index.
Re-sizing of array is necessary as arrays have a fixed size.
Example:
arr = [1, 2, 3, 4, 5]
arr.insert(0, 0)
print(arr) # [0, 1, 2, 3, 4, 5]
Array Deletion
The process of removing an element from an array at a specific index.
The element at the index is deleted and the subsequent elements are shifted to the left and
occupy the positions of the left sorted elements.
Example:
arr = [1, 2, 3, 4, 5]
arr.pop(0)
print(arr) # [2, 3, 4, 5]
Array Searching
The process of finding a specific element in an array.
Linear search and binary search are two common methods used.
Linear Search:
An elementary search algorithm where elements are searched sequentially one by
one from the beginning.
There is no restriction on how or where to start searching in an array.
Binary Search:
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