Package g1901_2000.s1961_check_if_string_is_a_prefix_of_array

Class Solution

java.lang.Object
g1901_2000.s1961_check_if_string_is_a_prefix_of_array.Solution
public class Solution extends Object
1961 - Check If String Is a Prefix of Array.

Easy

Given a string s and an array of strings words, determine whether s is a prefix string of words.

A string s is a prefix string of words if s can be made by concatenating the first k strings in words for some positive k no larger than words.length.

Return true if s is a prefix string of words, or false otherwise.

Example 1:

Input: s = “iloveleetcode”, words = [“i”,“love”,“leetcode”,“apples”]

Output: true

Explanation: s can be made by concatenating “i”, “love”, and “leetcode” together.

Example 2:

Input: s = “iloveleetcode”, words = [“apples”,“i”,“love”,“leetcode”]

Output: false

Explanation: It is impossible to make s using a prefix of arr.

Constraints:

  • 1 <= words.length <= 100
  • 1 <= words[i].length <= 20
  • 1 <= s.length <= 1000
  • words[i] and s consist of only lowercase English letters.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • isPrefixString

      public boolean isPrefixString(String s, String[] words)