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Introduction to Arrays

Last updated over 8 years ago

6 Nsɛmmisa

1

1

1

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3.

In general, when do you think you should store information in an array, and when should you use a variable?

1

1

1

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1.

Regarding JavaScript, there is a difference between a list and an array

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Ɛnyɛ ampa

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2.

An Array is an object used to store multiple values in a single variable

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Ɛnyɛ ampa

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4.

Consider searching for a given value in an array. Which of the following must be true in order to successfully use the binary search?
I. The values in the array must be numbers.
II. The values in the array must be in sorted order.
III. The array must not contain any duplicate values.

I Only

II Only

I and II ONly

II and III only

I, II, and II

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5.

Consider searching for a given value in a sorted array. Under which of the following circumstances will the sequential search be faster than the binary search?

The given value is the first element of the array.

The given value is the last element of the array

The given value is the middle element of the array.

The sequential search will never be faster than the binary search

The given value is not found in the array.

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6.

Assume the following declarations and assignments have been made.
int[] arr1 = {1, 2, 3, 4, 5, 6, 7, 8};
int[] arr2 = {4, 5, 6, 7, 8};

If the following segment of code is executed, what will arr1 and arr2 contain?
arr2 = arr1;
arr2[3] = 0;

arr1: {1, 2, 3, 4, 5, 6, 7, 8}

arr2: {4, 5, 6, 0, 8}

arr1: {1, 2, 3, 0, 5, 6, 7, 8}

arr2: {4, 5, 6, 7, 8}

arr1: {1, 2, 3, 0, 5, 6, 7, 8}

arr2: {1, 2, 3, 0, 5, 6, 7, 8}

arr1: {1, 2, 3, 4, 5, 6, 7, 8}

arr2: {4, 5, 6, 7, 8}