83. Swap Two Values Inside a Function
Core1000 ms256 MBSolved by 0%
Read two integers and print them swapped, separated by a space.
The exercise is not the swapping — it is doing it inside a function that changes the caller's variables rather than its own copies.
In C and C++ that means passing pointers or references. In Java, Python and JavaScript numbers are passed by value and cannot be changed that way at all, so the equivalent is to return both values, or to pass something mutable such as an array.
Constraints - `-1000000000 ≤ a, b ≤ 1000000000`
Input
A single line containing two integers, separated by a space.
Output
Print the two integers on one line, separated by a single space, in the opposite order.
Input3 7
Output7 3
Noteswaps two ordinary values
Input-5 12
Output12 -5
Noteswaps across a sign change
Hint 1Approach
Hint 2Approach
Hint 3Pseudocode
Hint 4Full solution