if length of a diagnonal in rectangle is 5. Its area is 12.
Please add more tests, otherwise the problem is trivially solvable.
The solution isn't unique - it could be anything between 0 and 12.5. Need to specify that only integer side lengths are allowed (even then there could be multiple solutions). Also more test cases are required.
This problem is problematic.
Swap the first and last columns
Back to basics 21 - Matrix replicating
Find out missing number from a vector of 9 elements
Find the logic
Is it an Armstrong number?
find the relation...
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