Computer Science: Programming with a Purpose Week 3 Quiz Answer

In this article i am gone to share Coursera Course Computer Science: Programming with a Purpose Week 3 | Arrays Quiz Answer with you..

Arrays

Question 1)

Which statements apply to one-dimensional arrays? Mark all that apply.

They facilitate storage and manipulation of data

With an index, a program can instantly access a given value

Efficiency derives from low-level computer hardware organization

Safe to think of values as being stored in contiguous locations in memory

They enable storage of large amounts of data (values all of the same type)

They enable programmers to mix different types of data in the same data structure

Question 2)

Which statements initialize the values in an array? Mark all that apply.

double[] a;
double[] a = { 0.3, 0.6, 0.1 };
a.length = 10;
double[] a = new double[100];
a = new double[1000);

Question 3)

What does the following code fragment print?

int[] b - { 1, 2, 3};

int[] c = b;

c[0]+= b[2];

c[1]+ =b[1];

c[2]+ =b[0];

System.out.println (c[0] + c[1] + c[21]):

Question 4)

What does the following code fragment print?

int[] a = new int[10];

for (inti = - 0; i <10; i++)

a[i] = 9 i;

for (int i = 0; i < 10; i++)

a[i] a[a[i]];

System.out.println(a[5]) ;

Question 5)

Which of the following statements are true for Java arrays? Mark all that apply.

If a and b are one-dimensional arrays of the same length, then the assignment statement a = b; copies each element from b to the corresponding position in a

Creating a one-dimensional array of length n takes time proportional to n

Two-dimensional arrays are rectangular (all rows have the same number of elements and all columns have the same number of elements)

Creating a one-dimensional array of length n will also initialize the n elements

It is possible to create a one-dimensional array such that one element is of type int and another is of type String.

Array indices start at 1

_________________________________________________________________________