Class Solution
Easy
You are given a string array words
and a string s
, where words[i]
and s
comprise only of lowercase English letters.
Return the number of strings in words
that are a prefix of s
.
A prefix of a string is a substring that occurs at the beginning of the string. A substring is a contiguous sequence of characters within a string.
Example 1:
Input: words = [“a”,“b”,“c”,“ab”,“bc”,“abc”], s = “abc”
Output: 3
Explanation:
The strings in words which are a prefix of s = “abc” are:
“a”, “ab”, and “abc”.
Thus the number of strings in words which are a prefix of s is 3.
Example 2:
Input: words = [“a”,“a”], s = “aa”
Output: 2
Explanation:
Both of the strings are a prefix of s.
Note that the same string can occur multiple times in words, and it should be counted each time.
Constraints:
1 <= words.length <= 1000
1 <= words[i].length, s.length <= 10
words[i]
ands
consist of lowercase English letters only.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionint
countPrefixes
(java.lang.String[] words, java.lang.String s) Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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countPrefixes
public int countPrefixes(java.lang.String[] words, java.lang.String s)
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