Melissa, a computer science engineering student, is learning the basics of programming by exploring arrays. She learns about different array methods. She wishes to learn more on inserting and deleting array items. She creates monthName array to extract only the three spring months—March, April, and May—from a calendar.
-Melissa wants to insert abbreviations of spring months into the monthName array.Which of the following methods should she use?
A) monthName.reverse(5,3,"Mar","Apr","May");
B) monthName.sort(2,3,"Mar","Apr","May");
C) monthName.join(5,3,"Mar","Apr","May");
D) monthName.splice(2,3,"Mar","Apr","May");

Question

Melissa, a computer science engineering student, is learning the basics of programming by exploring arrays. She learns about different array methods. She wishes to learn more on inserting and deleting array items. She creates monthName array to extract only the three spring months—March, April, and May—from a calendar.
-Melissa wants to insert abbreviations of spring months into the monthName array.Which of the following methods should she use?
A)  monthName.reverse(5,3,"Mar","Apr","May");
B)  monthName.sort(2,3,"Mar","Apr","May");
C)  monthName.join(5,3,"Mar","Apr","May");
D) monthName.splice(2,3,"Mar","Apr","May");

Quizplus · Accepted Answer

The splice method is used to insert new elements into an array, and it can also be used to replace existing elements. In this case, Melissa wants to add new values (abbreviations of spring months) into the monthName array, so the splice method is the best choice. The first parameter of the splice method specifies the index at which to start changing the array, while the second parameter specifies the number of elements to remove (in this case, 0 since Melissa is not removing any elements). The remaining parameters are the new elements to be added to the array. Therefore, the correct syntax would be monthName.splice(2, 0, "Mar", "Apr", "May").

Melissa, a Computer Science Engineering Student, Is Learning the Basics