g1601_1700.s1657_determine_if_two_strings_are_close

Class Solution

java.lang.Object

g1601_1700.s1657_determine_if_two_strings_are_close.Solution

public class Solution
extends Object

1657 - Determine if Two Strings Are Close.

Medium

Two strings are considered close if you can attain one from the other using the following operations:

• Operation 1: Swap any two existing characters.
  • For example, abcde -> aecdb
• Operation 2: Transform every occurrence of one existing character into another existing character, and do the same with the other character.
  • For example, aacabb -> bbcbaa (all a’s turn into b’s, and all b’s turn into a’s)

You can use the operations on either string as many times as necessary.

Given two strings, word1 and word2, return true if word1 and word2 are close , and false otherwise.

Example 1:

Input: word1 = “abc”, word2 = “bca”

Output: true

Explanation: You can attain word2 from word1 in 2 operations.

Apply Operation 1: “abc” -> “acb”

Apply Operation 1: “acb” -> “bca”

Example 2:

Input: word1 = “a”, word2 = “aa”

Output: false

Explanation: It is impossible to attain word2 from word1, or vice versa, in any number of operations.

Example 3:

Input: word1 = “cabbba”, word2 = “abbccc”

Output: true

Explanation: You can attain word2 from word1 in 3 operations.

Apply Operation 1: “cabbba” -> “caabbb”

Apply Operation 2: "caabbb“ -> ”baaccc"

Apply Operation 2: “baaccc” -> “abbccc”

Constraints:

• 1 <= word1.length, word2.length <= 105
• word1 and word2 contain only lowercase English letters.

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
boolean	closeStrings(String word1, String word2)

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

closeStrings

public boolean closeStrings(String word1,
                            String word2)