Number of occurrences of a character in a string
2085
How would you count occurrences of a string (actually a char) within a string?
44719
How can I count the number of matches for a regex?
107014
Replacing multiple characters in a string, the fastest way?
60433
How to count the number of occurrences of an element in a List
137454
Count number of occurrences of token in a file
66784
Number of strings lenght $n$ with no consecutive zeros
633
Number of bit strings
157292
Count the number of max consecutive "a"'s from a string. Python 3
18243
Number of occurences of letters in a word?
69139
Command which replaces all occurrences of a certain character with another character?
92986
A program to find length of string
116057
Lisp format a character a number of times
143893
How to find char in string and get all the indexes?
158050
Counting words in a string?
124998
Counting characters in C
29168
Counting the occurrences / frequency of array elements
143231
Efficient way to replace chars in a string (java)?