Package g1401_1500.s1461_check_if_a_string_contains_all_binary_codes_of_size_k

Class Solution

java.lang.Object
g1401_1500.s1461_check_if_a_string_contains_all_binary_codes_of_size_k.Solution
public class Solution extends java.lang.Object
1461 - Check If a String Contains All Binary Codes of Size K.

Medium

Given a binary string s and an integer k, return true if every binary code of length k is a substring of s. Otherwise, return false.

Example 1:

Input: s = “00110110”, k = 2

Output: true

Explanation: The binary codes of length 2 are “00”, “01”, “10” and “11”. They can be all found as substrings at indices 0, 1, 3 and 2 respectively.

Example 2:

Input: s = “0110”, k = 1

Output: true

Explanation: The binary codes of length 1 are “0” and “1”, it is clear that both exist as a substring.

Example 3:

Input: s = “0110”, k = 2

Output: false

Explanation: The binary code “00” is of length 2 and does not exist in the array.

Constraints:

  • 1 <= s.length <= 5 * 105
  • s[i] is either '0' or '1'.
  • 1 <= k <= 20

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    hasAllCodes(java.lang.String s, int k)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • hasAllCodes

      public boolean hasAllCodes(java.lang.String s, int k)