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Swap Two Numbers

Easy

0/40

Average time to solve is 10m

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1123 upvotes

Asked in companies

Problem statement

You are given two numbers 'a' and 'b' as input.

You must swap the values of 'a' and 'b'.

For Example:

Input: 
'a' = 8, 'b' = 5

Output:
5 8

Explanation:
Initially, the value of 'a' and 'b' is 8 and 5, respectively.

After swapping, the value of 'a' is 5, and the value of 'b' is 8.

Detailed explanation ( Input/output format, Notes, Images )

Input Format:

The first and only input line contains two integers, 'a' and 'b', representing the two numbers.

Output Format:

The first line of output prints the swapped value of 'a' and 'b'.

Note:

You do not need to print anything. It has already been taken care of. Just implement the given function.

Sample Input 1:

1 2

Sample Output 1:

2 1

Explanation For Sample Input 1:

The output of the above test case is 2 1.

Sample Input 2:

5 6

Sample Output 2:

6 5

Explanation For Sample Input 2:

The output of the above test case is  6 5.

Constraints:

-10^5 <= 'a', 'b' <= 10 ^ 5

Time Limit: 1 sec

Hint 1

We can use a third variable.

Approaches (2)

Approach 1

Approach 2

Swapping using a temporary variable

Take input in two integer datatype variables, a and b. Create a temporary variable temp and initialize it equal to a. Now make a equal to b, and finally make b equal to temp. Print a and b.

Time Complexity

O(1),

The Time Complexity is O(1).

Space Complexity

O(1),

The Space Complexity is O(1).

(100% EXP penalty)

Swap Two Numbers

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