Trial Assignment
• Write a program that prints the multiplication of two selected numbers from a line
– First line of input contains the number of lines to follow
– First number of each line, n>=4 and n<=1000, contains the number of integers that follow in the line
– Those n integers (each integer >=0; <=1000) follow till the end of the line, and should be stored (except the last two) in an array using index numbers 1…n-2
– The last two integers x, y (x,y>=1 & x,y<=n-2) in the line is the index
(starting from 1) of the integers from the line to multiply and print Example: (colors are just for visualization):
Input: Output:
3
5 13 2 5 1 3
6 5 3 6 7 4 2
9 7 12 2 14 5 7 9 6 3
Input/output in Java
• Use Standard I/O to read input and write the result • For Java, input: System.in, output: System.out
• To read numbers, one option is:
• Use a single Scanner object Scanner sc = new Scanner(System.in);
• Use nextInt()over and over to read integers
number = sc.nextInt(); • To print numbers: System.out.println(x);
• “Do Not”s
– Do not read from a disk file/write to disk file
– Do not write anything to screen except the result
• Ex: Human centric messages (“the result is”, “please enter..”)
• Automated grading via script will be used for checking correctness of your output
