Package g0001_0100.s0097_interleaving_string

Class Solution

java.lang.Object
g0001_0100.s0097_interleaving_string.Solution
public class Solution extends java.lang.Object
97 - Interleaving String.

Medium

Given strings s1, s2, and s3, find whether s3 is formed by an interleaving of s1 and s2.

An interleaving of two strings s and t is a configuration where they are divided into non-empty substrings such that:

  • s = s1 + s2 + … + sn
  • t = t1 + t2 + … + tm
  • |n - m| <= 1
  • The interleaving is s1 + t1 + s2 + t2 + s3 + t3 + … or t1 + s1 + t2 + s2 + t3 + s3 + …

Note: a + b is the concatenation of strings a and b.

Example 1:

Input: s1 = “aabcc”, s2 = “dbbca”, s3 = “aadbbcbcac”

Output: true

Example 2:

Input: s1 = “aabcc”, s2 = “dbbca”, s3 = “aadbbbaccc”

Output: false

Example 3:

Input: s1 = "", s2 = "", s3 = ""

Output: true

Constraints:

  • 0 <= s1.length, s2.length <= 100
  • 0 <= s3.length <= 200
  • s1, s2, and s3 consist of lowercase English letters.

Follow up: Could you solve it using only O(s2.length) additional memory space?

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isInterleave(java.lang.String s1, java.lang.String s2, java.lang.String s3)
     
    boolean
    isInterleave(java.lang.String s1, java.lang.String s2, java.lang.String s3, int i1, int i2, int i3, java.lang.Boolean[][] cache)
     

    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

    • isInterleave

      public boolean isInterleave(java.lang.String s1, java.lang.String s2, java.lang.String s3)

    • isInterleave

      public boolean isInterleave(java.lang.String s1, java.lang.String s2, java.lang.String s3, int i1, int i2, int i3, java.lang.Boolean[][] cache)