onenoughtone
Interactive String Visualization
String Indexing
Each character in a string has a position (index), starting from 0.
0H
1e
2l
3l
4o
String Operations
Concatenation
H
e
l
l
o
+
W
o
r
l
d
=
H
e
l
l
o
W
o
r
l
d
Substring (Slicing)
0H
1e
2l
3l
4o
string[1:4] = "ell"
e
l
l
String Searching
Finding a pattern within a string is a common operation.
M
i
s
s
i
s
s
i
p
p
i
Search for "issi"
M
i
s
s
i
s
s
i
p
p
i
Found at index 1
Learning Objective
Visualize string operations to understand how they work under the hood.
String Indexing
Each character in a string has a position (index), starting from 0.
0H
1e
2l
3l
4o
Access: To get the character at index 2:string[2] = 'l'
String Length
The length of a string is the number of characters it contains.
P
y
t
h
o
n
Length = 6 characters
Length: To get the length of a string:len(string) = 6
Common Length Operations
- Check if string is empty:
length == 0 - Last character:
string[length-1] - Iterate through string:
for i in range(length)
Common String Operations
Concatenation
H
e
l
l
o
+
W
o
r
l
d
=
H
e
l
l
o
W
o
r
l
d
Concatenation: Joining two strings together:string1 + string2
Substring (Slicing)
0H
1e
2l
3l
4o
string[1:4] = "ell"
e
l
l
Substring: Extracting a portion of a string:string[start:end]
String Searching
M
i
s
s
i
s
s
i
p
p
i
Search for "issi"
M
i
s
s
i
s
s
i
p
p
i
Found at index 1
Search: Finding a pattern within a string:string.indexOf(pattern) orstring.find(pattern)