strings_findDifferentWords_from_2_strings.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title></title>
</head>
<body>

<script type="text/javascript">
/*
 * Given two strings, we need to find only different words. Words which don't intersect (don't appear in both strings).
 */
    function findDifferentWords(s, t) {
        // making an array of words from "s" and "t"
        var sArray = sentenceToArrayConverter(s);
        var tArray = sentenceToArrayConverter(t);
        
        var findDifferentWords = [];

        for (var i=0; i< sArray.length; i++){
            if( tArray.indexOf(sArray[i]) == -1 ) {
                findDifferentWords.push(sArray[i]);
            }
        }
        return findDifferentWords
        
    }

    // array of words maker
        function sentenceToArrayConverter(string){
            var arr = [],
                w = "";

            for(var i=0; i < string.length; i++){
                // this is not a whitespace
                if( string[i].charCodeAt(0) != 32) {
                    w = w + string[i];
                } 
                if ( (string[i].charCodeAt(0) == 32 || i == string.length-1) && w.length != 0 ){
                    arr.push(w);
                    w = "";
                }
            }
            
            return arr
        }


    console.log( findDifferentWords(" This is a sentence with words", "This sentence") );

</script>

</body>
</html>