Question

supppose we already have a list called words, containing all the words(i.e., string).Write code that produce a sorted list with all duplicate words removed. For example, if words ==['hello', 'mother','hello','father','here','i','am','hello'], your code would produce the list ['am','father','hello','here','i','mother'].

Answer 1

Answer:

I will code in Javascript.

//define and initialize both arrays.

var words = ['hello', 'mother','hello','father','here','i','am','hello'];

var sortedList = [];

 

 for ( var i = 0;  i < words.length ; i++ ){  //loop used to go throght the words

   var duplicated = false;  // boolean used for detect duplicates

   for ( var j = i + 1;  j < words.length ; j++ ) {  //loop used to compare with other words

     if( words[i] == words[j] ) {  //if the word is duplicated, duplicated becomes true.

       duplicated = true;

       break;

     }

   }

   if (! duplicated) {  //if at the end of the loop of each word duplicated is false, then the element is pushed into sortedList.

     sortedList.push(words[i]);    

   }

 }

 sortedList.sort(); //when the loop is finished, use the Javascript method to sort an array.