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Class 12

Java Program for finding Difference between 2 Dates

Write a program to accept 2 dates in the string format dd/mm/yyyy and find the difference in days between the 2 dates. Example: INPUT: Date 1 : 20/12/2012 Date 2 : 11/02/2013 OUTPUT: Difference = 54 days The program should include the part for validating the inputs namely the date and the day on 1st January of that year.

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ISC Practice Paper [Computer Science (2013)]

This practice paper consists of 3 questions of 10 marks each. The timing for this paper is 45 minutes. You need to attempt all the given questions. The questions given in this paper basically covers the questions related to Output, completing a given program, Data structures, Recursion and Complexity.

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Program for Generating Lucky Numbers (ISC 2001) – [Method 1]

This is the Java program for generating the Lucky Numbers within a given range. This is the 1st method, and it uses only one single dimensional array to generate the Lucky Numbers. Consider the sequence of natural numbers. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Removing every second number produces the sequences 1, 3, 5, 7, 9 Removing every third number produces the sequences 1, 3, 7,9 Removing every fourth number produces the sequences 1, 3, 7 Hence, The Lucky numbers less than 10 are: 1, 3, 7

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Sample Programs on Operations on Text Files for ISC Computer Science

Sample programming codes of the operations performed on a text file. These operations include: Creating and Writing to a Text File Reading and Displaying from a Text File Copying the records of a Text File into another Text File Deleting a record from a File Inserting a record into a File Deleting a file completely Renaming an old file to a new file name Editing/Replacing a record in a File Sorting the records stored in the file in alphabetical order Searching for a record in a file Merging 2 files into a single file

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Program to Check for Kaprekar Number

Program in Java (BlueJ) to input a number and check whether it is a Kaprekar number or not. A Kaprekar number is a number, whose square is found out and the sum of the left and right part of its square (divided from its middle part) is equal to the number itself.

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