PROBLEM STATEMENT
You enjoy working with numbers that contain only square digits (namely, 0, 1, 4 and 9). The
sequence containing only these digits is 0, 1, 4, 9, 10, 11, 14... Return the n-th term (indexed
from 0) in this sequence.
DEFINITION
Class:SquareDigitNumbers
Method:getNumber
Parameters:int
Returns:int
Method signature:int getNumber(int n)
CONSTRAINTS
-n will be between 0 and 1000, inclusive.
EXAMPLES
0)
0
Returns: 0
The first square digit number is 0.
1)
5
Returns: 11
2)
16
Returns: 100
3)
121
Returns: 1941
4)
123
Returns: 1949
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