Watch 10 video solutions for Check If String Is a Prefix of Array, a easy level problem involving Array, Two Pointers, String. This walkthrough by NeetCode has 217,791 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
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 <= 1001 <= words[i].length <= 201 <= s.length <= 1000words[i] and s consist of only lowercase English letters.