Package g2001_2100.s2085_count_common_words_with_one_occurrence

Class Solution

java.lang.Object
g2001_2100.s2085_count_common_words_with_one_occurrence.Solution
public class Solution extends java.lang.Object
2085 - Count Common Words With One Occurrence.

Easy

Given two string arrays words1 and words2, return the number of strings that appear exactly once in each of the two arrays.

Example 1:

Input: words1 = [“leetcode”,“is”,“amazing”,“as”,“is”], words2 = [“amazing”,“leetcode”,“is”]

Output: 2

Explanation:

  • “leetcode” appears exactly once in each of the two arrays. We count this string.

  • “amazing” appears exactly once in each of the two arrays. We count this string.

  • “is” appears in each of the two arrays, but there are 2 occurrences of it in words1. We do not count this string.

  • “as” appears once in words1, but does not appear in words2. We do not count this string.

Thus, there are 2 strings that appear exactly once in each of the two arrays.

Example 2:

Input: words1 = [“b”,“bb”,“bbb”], words2 = [“a”,“aa”,“aaa”]

Output: 0

Explanation: There are no strings that appear in each of the two arrays.

Example 3:

Input: words1 = [“a”,“ab”], words2 = [“a”,“a”,“a”,“ab”]

Output: 1

Explanation: The only string that appears exactly once in each of the two arrays is “ab”.

Constraints:

  • 1 <= words1.length, words2.length <= 1000
  • 1 <= words1[i].length, words2[j].length <= 30
  • words1[i] and words2[j] consists only of lowercase English letters.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    countWords(java.lang.String[] words1, java.lang.String[] words2)
     

    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

    • countWords

      public int countWords(java.lang.String[] words1, java.lang.String[] words2)