Count numbers of \r\r in a string
135836
How to count of sub-string occurrences?
137471
Permutations of a string with duplicate characters
2013
How can I split a string into segments of n characters?
60915
Count number of 1's in binary representation
147411
How to extract numbers from a string
155425
Solve recurrence for strings that do not contain the substring 101
106151
Finding where a specific number appears in an expression
14774
Get the index of the nth occurrence of a string?
116258
Count number of occurrences of a pattern on same line
44719
How can I count the number of matches for a regex?
45606
Is there a bijection from [0,1] to R?
139442
How can i count number of digits in tetrated numbers?
135247
Extracting numbers from vectors of strings
8051
Evaluating a mathematical expression in a string
27951
Count strings occurrences and plot histogram
43575
R cleaning up a character and converting it into a numeric
102393
The R %*% operator