Question

Problem: Obscure Message

You decide to write a program that obscures a sentence for you. You will write a function Obscure() that takes three string arguments and returns one string argument. The first argument is a substitution key, the second a substitution value, and the third a sentence. The program first uses substitution to obscure the sentence and then prepends AND appends the substitution value followed by and preceded by a space " ", respectively. The program should then return the obscured sentence to the caller. You can use the following shell to start with the given parameters below:

//assignment1.js

function Obscure(sub_key, sub_value, sentence) {
    // your code here
    ...
    return obscuredSentence;
}

Example Test Case(s):

Arguments: "the", "the goat", "I want the money"
Returns: "the goat I want the goat goat money the goat"

Arguments: "the", "chicken", "I want the money"
Returns: "chicken I want chicken money chicken"

Obscure() should satisfy the following:

• The substitution key and value can be strings that contains only letters.
• If the sentence contains the key anywhere, it is replaced in the sentence with the substitution value.
• The substitution is recursively performed up to 2 times. If it cannot be completed up to 2 times, it will simply move on to the next part of the program. For this, you may use global variables if needed.
• Use more than one function to complete the program.
• Use JavaScript built-in functions.

Answer 1

// Javascript Code:
var recurse_count = 0;
function Obscure(sub_key, sub_value, sentence) {
   if(recurse_count==2)return sentence; // two Perform recursion only two times
var sentence1 = sentence.replace(sub_key , sub_value);
recurse_count++;
return Obscure(sub_key , sub_value, sentence1);
}

function prepends(sub_value, sentence){
   return sub_value + " " + sentence;
}

function appends(sub_value, sentence){
   sentence = sentence.concat(" ");
   sentence = sentence.concat(sub_value);
   return sentence;
}

sub_key = "the"
sub_value = "the goat"
sentence = "I want the money"

sentence = Obscure(sub_key, sub_value, sentence);
sentence = prepends(sub_value, sentence);
sentence = appends(sub_value, sentence);
console.log(sentence);

Output:

var recurse count = 0; function Obscure (sub_key, sub_value, sentence) f if (recurse_count-2)return sentence; var sentencel -sentence.replace(sub_key sub_value) recurse_count+ return Obscure(sub_key sub_value, sentencel): function prepends (sub_value, sentence)( return sub value +""+sentence function appends (sub value, sentence) sentence= sentence, concat(" "); sentence-sentence.concat(sub_value) return sentence; sub velue the goat subvalue"the goat" sentenceI want the money" sentenceObscure (sub_key, sub_value, sentence) sentence- prepends (sub_value, sentence) sentence-appends (sub_value, sentence) console.log(sentence) the goat I want the goat goat money the goat undefined

var recurse count -6; function Obscure (sub_key, sub_value, sentence) f if (recurse_count-2) return sentence; var sentencel -sentence.replace(sub_key sub_value) recurse count++ return Obscure(sub_key sub_value, sentencel): function prepends (sub_value, sentence)( return sub value +""+sentence function appends (sub_value, sentence) sentence= sentence , concat(" "); sentence-sentence.concat(sub_value); return sentence; sub_key "the" sub valuechicken" sentenceI want the money" sentenceObscure (sub_key, sub_value, sentence); sentence- prepends (sub_value, sentence) sentence-appends (sub_value, sentence) console.log(sentence) chicken I want chicken money chicken undefined

Hit Like for Support! :)