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Operation on Strings

Length of a String:

We can find the length of a string using the len() function.

Example:

fruit = "Mango"
len1 = len(fruit)
print("Mango is a", len1, "letter word.")

Output:

Mango is a 5 letter word.

String as an Array:

A string is essentially a sequence of characters, also called an array. Thus, we can access the elements of this array.

Example:

pie = "ApplePie"
print(pie[:5])
print(pie[6])  # returns character at specified index

Output:

Apple
i

Note: This method of specifying the start and end index to specify a part of a string is called slicing.

Example:

pie = "ApplePie"
print(pie[:5])      # Slicing from Start
print(pie[5:])      # Slicing till End
print(pie[2:6])     # Slicing in between
print(pie[-8:])     # Slicing using negative index

Output:

Apple
Pie
pleP
ApplePie

Loop through a String:

Strings are arrays, and arrays are iterable. Thus, we can loop through strings.

Example:

alphabets = "ABCDE"
for i in alphabets:
    print(i)

Output:

A
B
C
D
E