quiz by joseph lindo

Quizby Joseph Lindo

Program Analysis by providing the output of a program snippet

Some are true or false

Some have choices

Question1. What is the output of the program below?

int[] num = new int [5];System.out.println(num.length);


int[] num = {3,4,2,7,8,10,30};System.out.println(num.length);


int[][] num = new int [5][3];System.out.println(num.length);

a) 3b) 5c) 15d) 0e) null


int[] num = {3,4,2,7,8,10,30};System.out.println(num[5]);


int[] num = {3,4,2,7,8,10,30};System.out.println(num[7]);

a) 30b) 10c) Error messaged) 0e) null

Question6.

Single Dimension : ListThree Dimension : ___________

Question7. True or falseOnce the size of an array has been specified, it is still can be resize on the later part of the program.

Question8 . What is the output of the program below?

int[] num = {3,4,2,7,8,10,30};System.out.println(‘‘num.length’’);


int[][] num = new int[5][6];int x = num.length;System.out.println(x);


int[][] num = new int[5][6];int x = num[5].length;System.out.println(x);

a.6b.5c.0d.Error message

Question11 – 15 . What is the output of the program below?

int[] num = {3,4,2,7,8,10,30};for(int i=num.length-1; i>1;i--){

System.out.println(num[i]);}

Question16 . What is the index combination of the colored cell?

a) arr[3][4]b) arr[arr.length-1][2]c) arr[4][2]d) arr[4][3]

Question17.

Single Dimension : ListTwo Dimension : ___________

Question18. True or falseArray stores multiple data types.

Question19. True or falseIndex of an array always start from 0 up to array.length.

Question20 . What is the equation to be used to display the full size of the array?int[][] num = new int[5][6];int x = ??System.out.println(x);

a.num.length*num[0].lengthb.num.length*num[4].lengthc.num.length*num[5].lengthd.All of the abovee.None of the abovef. A and B onlyg. A and C only

Question21-25. What is the output of the program below?

int[] num = {3,4,2,7,8,10,30};for(int i=num.length-3; i>=1;i--){

System.out.println(num[i-1]);}

quiz by joseph lindo

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