How do you swap two variables without using a third variable?

How do you swap two variables without using a third variable?

Let’s see a simple c example to swap two numbers without using third variable.

1. #include
2. int main()
3. {
4. int a=10, b=20;
5. printf(“Before swap a=%d b=%d”,a,b);
6. a=a+b;//a=30 (10+20)
7. b=a-b;//b=10 (30-20)
8. a=a-b;//a=20 (30-10)

How can we swap two numbers without using third variable and arithmetic operator?

The arithmetic operators for addition and subtraction can be used to perform the swap without using a third variable. Similarly, multiplication and division can be used to perform the swap without using the third variable.

How can I swap two numbers without using third variable in CPP?

C++ Program to swap two numbers without third variable

1. #include
2. using namespace std;
3. int main()
4. {
5. int a=5, b=10;
6. cout<<“Before swap a= “<
7. a=a*b; //a=50 (5*10)
8. b=a/b; //b=5 (50/10)

How do you swap variables in an array?

For variable number of elements You can swap any number of objects or literals, even of different types, using a simple identity function like this: var swap = function (x){return x}; b = swap(a, a=b); c = swap(a, a=b, b=c); For your problem: var swap = function (x){return x}; list[y] = swap(list[x], list[x]=list[y]);

How do you swap two numbers in a function?

C Program to Swap two Numbers

1. Assign x to a temp variable : temp = x.
2. Assign y to x : x = y.
3. Assign temp to y : y = temp.

How do you swap two elements?

swap() method to swap two elements within specified arraylist at specified indices.

1. Swap two elements in arraylist – Collections. swap() Collections.
2. Swap two elements in arraylist example. Java program to swap two specified elements in a given list. In this example, we are swapping the elements at position ‘1’ and ‘2’.

Is there a way to swap two variables?

The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number which has all the bits as 1 wherever bits of x and y differ.

How to swap two numbers without using a temporary variable?

Given two variables, x, and y, swap two variables without using a third variable. Method 1 (Using Arithmetic Operators) The idea is to get a sum in one of the two given numbers. The numbers can then be swapped using the sum and subtraction from the sum.

Is there a way to swap two numbers?

The bitwise XOR operator can be used to swap two variables. The XOR of two numbers x and y returns a number that has all the bits as 1 wherever bits of x and y differ. For example, XOR of 10 (In Binary 1010) and 5 (In Binary 0101) is 1111 and XOR of 7 (0111) and 5 (0101) is (0010).

How to swap two variables in one line in Python?

Python: In Python, there is a simple and syntactically neat construct to swap variables, we just need to write “x, y = y, x”. C/C++: Below is one generally provided classical solution. // Swap using bitwise XOR (Wrong Solution in C/C++) x ^= y ^= x ^= y;