int[] numList = new int [50]:for (int i = 0; i < 50; i++)numList[i] 2 * i:num[10] = -20;num(30] = 8;40. What is the value of numList.length in the array above?b. 30d. 5041. Which ofthe following statements creates alpha, an anray of 5 components of the type int, and initializeseach component to 10?(i) int [] alpha = {10, 10, 10, 10, 10);(ii) int (5] alpha = (10, 10, 10, 10, 10}a. Only (i)b. Only (ii)c. Both (i) and (ii)d. None of these42. Consider the following declaration.int[] list = (2, 5, 7, 8, 12, 13, 15, 18, 22, 25};%3DWhich of the following correctly finds the sum of the clements of list?()for (int j = 0; j < 10; j++)sum = sum list[j];for (int j = 1; j <= 10; j++)%3Dsum + list [j);unsa. Only (i)b. Only (ii)c. Both (i) and (ii)d. None of these43. What is the function of the reserved word class?It defines a data type and allocates memory.b. It defines only a data type; it does not allocate memory.It acts as a modifier.a.c.d. It has no function.44. Which of the following is a constructor without parameters?c. finalizerd. modifiera.copy constructorb. default constructor6.

array.length is used to find the length of array. loop is used in programming languages to repeat…

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40. What is the value of numiList.length in the array above? 49

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

int[] numList = new int [50]:
for (int i = 0; i < 50; i++)
numList[i] 2 * i:
num[10] = -20;
num(30] = 8;
40. What is the value of numList.length in the array above?
b. 30
d. 50
41. Which ofthe following statements creates alpha, an anray of 5 components of the type int, and initializes
each component to 10?
(i) int [] alpha = {10, 10, 10, 10, 10);
(ii) int (5] alpha = (10, 10, 10, 10, 10}
a. Only (i)
b. Only (ii)
c. Both (i) and (ii)
d. None of these
42. Consider the following declaration.
int[] list = (2, 5, 7, 8, 12, 13, 15, 18, 22, 25};
%3D
Which of the following correctly finds the sum of the clements of list?
()
for (int j = 0; j < 10; j++)
sum = sum list[j];
for (int j = 1; j <= 10; j++)
%3D
sum + list [j);
uns
a. Only (i)
b. Only (ii)
c. Both (i) and (ii)
d. None of these
43. What is the function of the reserved word class?
It defines a data type and allocates memory.
b. It defines only a data type; it does not allocate memory.
It acts as a modifier.
a.
c.
d. It has no function.
44. Which of the following is a constructor without parameters?
c. finalizer
d. modifier
a.
copy constructor
b. default constructor
6.

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