Find the duplicate characters and their counts
Coding problemEasy-MediumAsked in: Accenture, Capgemini
Given a string s, find the characters that occur more than once, and how many times each occurs.
Return one entry per repeated character, in the order the characters first appear in s. Write each entry as the character, an equals sign and the count, such as "r=2".
Skip spaces. Upper and lower case are different characters. If no character repeats, return an empty list.
Examples
Example 1
Input: s = "programming"
Output: ["r=2","g=2","m=2"]
Example 2
Input: s = "abc"
Output: []
Example 3
Input: s = "a a A"
Output: ["a=2"]
Spaces are skipped, and A is a different character from a.
Constraints
- The length of s is between 0 and 100,001
- s holds printable ASCII characters only
Run checks the 3 examples. Submit also runs the hidden tests: edge cases, large inputs and a time limit.
Run your code to see the results here. Ctrl or Cmd + Enter runs; add Shift to submit.