# [Solved] You are given an array of strings words and a string chars. A string is good if it can be formed by characters from chars (each character can only be used once). Return the sum of lengths of all good strings in words.

## Question

You are given an array of strings `words` and a string `chars`.

A string is good if it can be formed by characters from chars (each character can only be used once).

Return the sum of lengths of all good strings in words.

Example 1:

```Input: words = ["cat","bt","hat","tree"], chars = "atach"
Output: 6
Explanation: The strings that can be formed are "cat" and "hat" so the answer is 3 + 3 = 6.
```

Example 2:

```Input: words = ["hello","world","leetcode"], chars = "welldonehoneyr"
Output: 10
Explanation: The strings that can be formed are "hello" and "world" so the answer is 5 + 5 = 10.
```

Constraints:

• `1 <= words.length <= 1000`
• `1 <= words[i].length, chars.length <= 100`
• `words[i]` and `chars` consist of lowercase English letters.

## Python Solution

```class Solution:
def countCharacters(self, words: List[str], chars: str) -> int:
l=[]
for w in words:
for i in w:
if w.count(i)>chars.count(i):
break
else:
l.append(w)

return len(''.join(l))``` ##### Abhishek Sharma

Started my Data Science journey in my 2nd year of college and since then continuously into it because of the magical powers of ML and continuously doing projects in almost every domain of AI like ML, DL, CV, NLP.

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