Practice level 11 · Hard · 20 programs

Strings

Length, reverse, palindrome, counts and case changes.

The programs in this level

1. Input and print string
2. Find string length
3. Copy string
4. Compare strings
5. Concatenate strings
6. Reverse string
7. Check palindrome string
8. Count vowels
9. Count consonants
10. Count digits in string
11. Count spaces
12. Count words
13. Count special characters
14. Convert lowercase to uppercase
15. Convert uppercase to lowercase
16. Toggle case
17. Remove spaces
18. Remove duplicate characters
19. Find frequency of characters
20. Find first repeated character