Quick Reference The goal of this chapter is to write a complete char device driver. We'll develop a character driver because this class is suitable for most simple hardware devices. Char drivers are also easier to understand than, for example, block drivers or network drivers. Our ultimate aim is to write a modularized char driver, but we won't talk about modularization issues in this chapter.
It is also a good programming questions for freshers.
This question was asked to me long back and didn't had any idea about how to approach this question without using temp or third variable, may be lack of knowledge on bitwise operators in Java or may be it didn't click at that time. Given some time and trial error, I eventually come out with a solution with just arithmetic operator but interviewer was keep asking about other approaches of swapping two variables without using temp or third variable.
Personally, I liked this question and included in list of my programming interview question because of its simplicity and some logical work, it force you to do.
When learned bit-wise operation in Java I eventually find another way of swapping two variables without third variable, which I am going to share with you guys.
Swapping two numbers without using temp variable in Java If you have ever heard this question, then you must be familiar with this approach of swapping numbers without using temp variable. If you are hearing it first time, then try it yourself, its a good programming exercise for absolute first timer.
By the way, here is the code example of swapping two numbers without using temp variable and using arithmetic operator in Java: XOR bitwise operator returns zero if both operand is same i.
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By leveraging this property, we can swap two numbers in Java. Here is code example of swapping two numbers without using temp variable in Java using XOR bitwise operand: Here is the code example to swap tow number without using third variable with division and multiplication operators in Java: Its good to know multiple ways of swapping two variables without using temp or third variable to handle any follow-up question.
Swapping numbers using bitwise operator is the fastest among three, because it involves bitwise operation. A nice trick to drive interview on your expert area.print prime numbers in java.
Yes, the above program is not correct.
To print prime numbers, the logic mentioned here is not correct. C program to swap two numbers with and without using third variable, using pointers, functions (Call by reference) and using bitwise XOR operator.
Swapping means interchanging. For example, if in your C program you have taken two variables a and b where a = 4 and b = 5, then before swapping a = 4, b = 5 after swapping a = 5, b = 4.
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In the program integer type variable declare(x,y) which contains the value.
To swap the variables we need to declare them with unique values. To swap the variables without using third variable and in this case we also do not use the Temp (temporary) variable.
C Program to Swap Two Numbers Using Call By Reference This program allows the user to enter two integer values. By using the Functions Call By Reference concept (or Pointers concept), this program will Swap two number. C++ program to find ASCII Code for Characters and numbers.
C++ Program Write a Program to Enter Char or Number and Check its ASCII Code.