Question

Define a JavaScript function named prepend that has two parameters. The first parameter is an array of Strings. The second parameter is a String. Your function should use the accumulator pattern to return a newly created array whose elements are the concatenation of the second parameter with the element at the same index in the first parameter.

Answer 1

Code:

Everything About Code is Explained in comments of code:

//Here is Definition of Prepend Function
function prepend(string_array, string){
    //creating new array
    var arr=new Array(string_array.length);
    //using the accumulator pattern to iterate with for loop
    // to create the contents of new array
    for(var i=0;i<string_array.length;i++){  
        arr[i]=string+string_array[i];
    }
    return arr;  //returning the newly created array
}
//Printing line
console.log("The array after prepending is: ");
//calling prepend Function and printing the array
console.log(prepend(["portant", "possible", "mature"], "im"));

Output:

Thanks.