1178. Number of Valid Words for Each Puzzle

https://leetcode.com/problems/number-of-valid-words-for-each-puzzle

Description

With respect to a given puzzle string, a word is valid if both the following conditions are satisfied:

• word contains the first letter of puzzle.

• For each letter in word, that letter is in puzzle.

  • For example, if the puzzle is "abcdefg", then valid words are "faced", "cabbage", and "baggage", while

  • invalid words are "beefed" (does not include 'a') and "based" (includes 's' which is not in the puzzle).

Return an array answer, where answer[i] is the number of words in the given word list words that is valid with respect to the puzzle puzzles[i]. Example 1:

**Input:** words = ["aaaa","asas","able","ability","actt","actor","access"], puzzles = ["aboveyz","abrodyz","abslute","absoryz","actresz","gaswxyz"]
**Output:** [1,1,3,2,4,0]
**Explanation:** 
1 valid word for "aboveyz" : "aaaa" 
1 valid word for "abrodyz" : "aaaa"
3 valid words for "abslute" : "aaaa", "asas", "able"
2 valid words for "absoryz" : "aaaa", "asas"
4 valid words for "actresz" : "aaaa", "asas", "actt", "access"
There are no valid words for "gaswxyz" cause none of the words in the list contains letter 'g'.

Example 2:

**Input:** words = ["apple","pleas","please"], puzzles = ["aelwxyz","aelpxyz","aelpsxy","saelpxy","xaelpsy"]
**Output:** [0,1,3,2,0]

Constraints:

• 1 <= words.length <= 105

• 4 <= words[i].length <= 50

• 1 <= puzzles.length <= 104

• puzzles[i].length == 7

• words[i] and puzzles[i] consist of lowercase English letters.

• Each puzzles[i] does not contain repeated characters.

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