code_tycoon's blog

GFG Contest Problem
By code_tycoon, history, 22 months ago, In English

A K-periodic string is a circular string that remains same when it is rotated by K units. Given a circular string s, find whether there exists a permutation of string s which is a K periodic circular string and if it exists then find lexicographically smallest permutation of s which is a K periodic circular string. Return empty string if there does not exist a valid permutation of s which is a K-period string. Note: You can rotate the string in any direction.

Example 1 : s = "abba" k = 2 Output 1 : "abab"

Example 2 : s = "abbbbbb" k = 4 Output 2 : ""

Constraints : 1 <= length of string s <= 1e5 1 <= k <= 1e9

Please help in this problem and tell your approach to the problem

  • Vote: I like it
  • +3
  • Vote: I do not like it

Comments Comments (5)
| Write comment?
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by code_tycoon (previous revision, new revision, compare).

→ Reply
»
22 months ago, # |
  Vote: I like it +1 Vote: I do not like it
Observation
AC Code
→ Reply
»
22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Please provide the link to the problem too . So that we can write our solution to check whether if it is correct or not.

→ Reply