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Suppose you have a functional interface called Calculator with a single abstract method called performOperation, which takes two numbers and returns a result. Below is the interface:

Now, consider the following MathOperations class that implements the Calculator interface:

Now, how could you use the MathOperations interface
Options: Calculator and class

to calculate the multiplication of 3.5 and 2.0?

None

What is the correct definition of table in database?

An object data in a database is a Table

Is a set of data organized in the form of rows and columns

Are attributes

A field is a Table in database

None

What will be the output of the following pseudocode?

7 18 14

7 10 15

7 14 10

7 7 7

None

Within a set of objects there are different forms and ways of doing things:

Abstraction

Overwrite

Inheritance

Polymorphism

None

What are DML statements?

DROP, SELECT, UPDATE,DESTROY

SELECT, UPDATE, DELETE, INSERT

DESCRIBE, MODEL, ALTER

GRANT, REVOKE, VIEW, CREATE

None

What does the INSERT statement do?

INSERT statement adds one or more records to a table

INSERT statement updates one or more records to a table

The INSERT statement edits one or more records to a table

The INSERT statement deletes one or more records from a table.

None

It is considered as the main field of a table in the database:

UNIQUE DATA

PRIMARY KEY

1ST NORMAL FORM

FOREIGN KEY

None

What is the correct definition of an abstract class?

Bring together all the elements that can be considered as belonging to the same entity.

Allows you to define new classes based on existing ones in order to reuse code.

The ability to call different functions with the same name.

They are characterized in that at least one of their methods must be declared abstract, which has no implementation, and the behavior of these methods is defined by the concrete classes that inherit it.

None

Which of the following series will be printed by the given pseudocode?

1 2 3 4 5 6

2 4 6 8 9

1 3 6 10 15

1 1 2 3 5

None

10.

Find First and Last Position of Element in Sorted Array

Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value.
If target is not found in the array, return [-1, -1]. You must write an algorithm with O(log n) runtime complexity.

Example 1:
Input: nums = [5,7,7,8,8,10], target = 8
Output: [3,4]

Example 2:
Input: nums = [5,7,7,8,8,10], target = 6
Output: [-1,-1]

Example 3:
Input: nums = [], target = 0
Output: [-1,-1]

Find First and Last Position of Element in Sorted Array

None

11.

The SET clause is used in which of the following SQL statements?

DROP

SELECT

UPDATE

DEELTE

None

12.

What result will the following code show?

[14,29,38]

Error[15,27,39]

[27,39,50]

[40,50,39]

None

13.

Which SOLID principle is this code violating?

Single Responsibility

Open / Closed

Interface Segregation

Liskov Substitution

None

14.

Which of the following series will be printed by the given pseudocode?

7 18 14

7 14 10

7 10 15

7 7 7

None

15.

Given the following array of integers in Java:

After applying the sorting algorithm Arrays.sort(numbers);, what will be the content of the numbers array?

{1, 4, 3, 5, 8}

{3, 1, 4, 5, 8}

{8, 5, 4, 3, 1}

{1, 3, 4, 5, 8}

None

16.

Search in Rotated Sorted Array

There is an integer array nums sorted in ascending order (with distinct values). Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1 <= k < nums.length) such that the resulting array is [nums[k], nums[k+1], …, nums[n-1], nums[0], nums[1], …, nums[k-1]] (0-indexed). For example, [0,1,2,4,5,6,7] might be rotated at pivot index 3 and become [4,5,6,7,0,1,2].
Given the array nums after the possible rotation and an integer target, return the index of target if it is in nums, or -1 if it is not in nums. You must write an algorithm with O(log n) runtime complexity.

Example 1:
Input: nums = [4,5,6,7,0,1,2], target = 0
Output: 4

Example 2:
Input: nums = [4,5,6,7,0,1,2], target = 3
Output: -1

Example 3:
Input: nums = [1], target = 0
Output: -1

None

17.

It is a generic template for a set of objects with similar characteristics.

Objects

Method

Functions

Class

None

18.

What result will the following code show?

None

19.

What Design Patterns category is Abstract Factory in?

Behavioural

Structural

Graps

Creational

None

20.

Search Insert Position

Given a sorted array of distinct integers and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order.

You must write an algorithm with O(log n) runtime complexity.

Example 1:
Input: nums = [1,3,5,6], target = 5
Output: 2

Example 2:
Input: nums = [1,3,5,6], target = 2
Output: 1

Example 3:
Input: nums = [1,3,5,6], target = 7
Output: 4

None

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