Mapping letters in a string to number of occurences, using Stream
11398
How do I count the number of occurrences of a char in a String?
54975
Create a string of variable length, filled with a repeated character
36917
The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
135836
How to count of sub-string occurrences?
146689
How do I count the number of occurrences of a word in a text file with the command line?
1959
How do I efficiently iterate over each entry in a Java Map?
143231
Efficient way to replace chars in a string (java)?
122389
How can I generate a list of all possible permutations of several letters?
8044
Sort and count number of occurrence of lines
108210
How to count characters in a file and print them sorted alphanumerically
95647
How do I repeat a character n times in a string?
145114
Scala how can I count the number of occurrences in a list
83477
How to print every Nth character of a string?
18243
Number of occurences of letters in a word?
35365
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
138073
How do I generate a stream from a string?
103634
Fastest method to replace all instances of a character in a string