Leetcode Longest Common Prefix












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$begingroup$


I just recently finished the following problem on Leetcode problem. I know it's not the cleanest or fastest solution. I would appreciate if I can get some feedback on how to optimize the code.



The idea is too add all possible prefixes into an array and return the longest possible prefix. I believe this is probably why the algorithm doesn't run as fast as it should.



Also, I would appreciate if someone can assist in determining what the space and time complexity would be for the algorithm below?



var longestCommonPrefix = function(strs) {
const firstWord = strs[0];
const arrResults = ;
let index = 1;
let arrWithoutFirstElement = strs.slice(1, strs.length);
if(strs.length===0)return '';
if(strs.length===1)return strs[0];

while(index <= firstWord.length) {
if(arrWithoutFirstElement.every(element =>
element.substring(0,index)===firstWord.substring(0,index))){
arrResults.push(firstWord.substring(0,index));
}
index++;
}

return arrResults.length > 0 ? arrResults[arrResults.length-1] : '';
}

console.log(longestCommonPrefix(["flower","flow","flight"]));









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    0












    $begingroup$


    I just recently finished the following problem on Leetcode problem. I know it's not the cleanest or fastest solution. I would appreciate if I can get some feedback on how to optimize the code.



    The idea is too add all possible prefixes into an array and return the longest possible prefix. I believe this is probably why the algorithm doesn't run as fast as it should.



    Also, I would appreciate if someone can assist in determining what the space and time complexity would be for the algorithm below?



    var longestCommonPrefix = function(strs) {
    const firstWord = strs[0];
    const arrResults = ;
    let index = 1;
    let arrWithoutFirstElement = strs.slice(1, strs.length);
    if(strs.length===0)return '';
    if(strs.length===1)return strs[0];

    while(index <= firstWord.length) {
    if(arrWithoutFirstElement.every(element =>
    element.substring(0,index)===firstWord.substring(0,index))){
    arrResults.push(firstWord.substring(0,index));
    }
    index++;
    }

    return arrResults.length > 0 ? arrResults[arrResults.length-1] : '';
    }

    console.log(longestCommonPrefix(["flower","flow","flight"]));









    share|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      I just recently finished the following problem on Leetcode problem. I know it's not the cleanest or fastest solution. I would appreciate if I can get some feedback on how to optimize the code.



      The idea is too add all possible prefixes into an array and return the longest possible prefix. I believe this is probably why the algorithm doesn't run as fast as it should.



      Also, I would appreciate if someone can assist in determining what the space and time complexity would be for the algorithm below?



      var longestCommonPrefix = function(strs) {
      const firstWord = strs[0];
      const arrResults = ;
      let index = 1;
      let arrWithoutFirstElement = strs.slice(1, strs.length);
      if(strs.length===0)return '';
      if(strs.length===1)return strs[0];

      while(index <= firstWord.length) {
      if(arrWithoutFirstElement.every(element =>
      element.substring(0,index)===firstWord.substring(0,index))){
      arrResults.push(firstWord.substring(0,index));
      }
      index++;
      }

      return arrResults.length > 0 ? arrResults[arrResults.length-1] : '';
      }

      console.log(longestCommonPrefix(["flower","flow","flight"]));









      share|improve this question









      $endgroup$




      I just recently finished the following problem on Leetcode problem. I know it's not the cleanest or fastest solution. I would appreciate if I can get some feedback on how to optimize the code.



      The idea is too add all possible prefixes into an array and return the longest possible prefix. I believe this is probably why the algorithm doesn't run as fast as it should.



      Also, I would appreciate if someone can assist in determining what the space and time complexity would be for the algorithm below?



      var longestCommonPrefix = function(strs) {
      const firstWord = strs[0];
      const arrResults = ;
      let index = 1;
      let arrWithoutFirstElement = strs.slice(1, strs.length);
      if(strs.length===0)return '';
      if(strs.length===1)return strs[0];

      while(index <= firstWord.length) {
      if(arrWithoutFirstElement.every(element =>
      element.substring(0,index)===firstWord.substring(0,index))){
      arrResults.push(firstWord.substring(0,index));
      }
      index++;
      }

      return arrResults.length > 0 ? arrResults[arrResults.length-1] : '';
      }

      console.log(longestCommonPrefix(["flower","flow","flight"]));






      javascript algorithm






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      asked 7 hours ago









      Rez88Rez88

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