CodeHS - Module 7: Basic Data Structures- Questions & Answers

CodeHS - Module 7: Basic Data Structures-
Questions & Answers

7.1.4 List of Places to Travel ✔️Correct Ans-function start(){

var travelList = ["England" , "Greenland" , "India" , "Pakistan"];

println(travelList[2]);

}



7.1.5 List of Prime Numbers ✔️Correct Ans-function start(){

var numList = ["2" , "3" , "5" , "7" , "11"];

println(numList[0]);

println(numList[2]);

println(numList[4]);

}



7.2.4 Top Movies ✔️Correct Ans-function start(){

var moviesList = ["Easy A" , "Mean Girls" , "Interstellar" , "She's The Man"];

println(moviesList[0]);

moviesList[0] = "Star Wars";

println(moviesList[0]);

}

,7.3.4 Empty Array (Push/Pop) ✔️Correct Ans-function start(){

var arr = [];

arr.push(3);

arr.push("hello");

arr.push(false);

println(arr[0]);

println(arr[1]);

println(arr[2]);

var last = arr.pop();

var last2 = arr.pop();

println(arr[0]);

println(arr[1]);

println(arr[2]);

}



7.4.7 Product of List ✔️Correct Ans-function start(){

var arr = [1, 8, 3, 4, 2, 9];

var product = 1;

for(var i = 0; i < arr.length; i++){

var cur = arr[i];

product *= cur;

}

, println(product);

}



7.4.8 Print Flight Itinerary ✔️Correct Ans-function start(){

var arr = ["Paris" , "Dallas" , "Austin" , "Anchorage" , "New York"];

for(var i = 0; i < arr.length; i++){

var cur = arr[i];

print(cur);

if(i < arr.length - 1){

print("->");

}

}

}



7.4.9 Double List ✔️Correct Ans-function start(){

var arr = [10, 20, 30, 40];

var double = doubleList(arr);

println(double);

}

function doubleList(arr){

var result = [];

for(var i = 0; i < arr.length; i++){