[leetcode] 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence

Q. Given a sentence that consists of some words separated by a single space, and a searchWord. You have to check if searchWord is a prefix of any word in sentence. Return the index of the word in sentence where searchWord is a prefix of this word (1-indexed). If searchWord is a prefix of more than one word, return the index of the first word (minimum index). If there is no such word return -1. A prefix of a string S is any leading contiguous substring of S.

 

    let isPrefixOfWord = function(sentence, searchWord) {
      let count = 0;
      if(sentence.includes(searchWord)===false) return -1; 

      let newSentence = sentence.split(" "); 
      for(let i=0; i<newSentence.length; i++){ 
          if(newSentence[i].includes(searchWord)===true && newSentence[i].indexOf(searchWord) === 0){ 
              return i+1; 
          }
          count++; 
      }
      if(count===newSentence.length) return -1; 
     };