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function findLongestWord(str) {
    var spltStr = str.split(" ");
    spltStr.sort(function(a, b){return b.length-a.length});
    return spltStr[0].length;
  }
  
  
  // for loop
  
  function findLongestWord(str) {
    var spltStr = str.split(" ");
    var longestWord = 0;
    for (var i = 0; i < spltStr.length; i++) {
      if (spltStr[i].length > longestWord) {
        longestWord = spltStr[i].length        
      } 
    }
    
    return longestWord; 
  }