Problem 1477. Champernowne Constant
The Champernowne constant is a real number whose digits in decimal representation come from the concatenation of all consecutive positive integers starting from 1.
That is
0.1234567891011121314151617181920...
This constant is of interest because it can be understood to contain an encoding of any past, present or future information, because any given sequence of numbers can be shown to exist somewhere in the champernowne representation.
Return the nth digit of the champernowne constant. The function takes an array of position values and returns an array of digits corresponding to those positions.
Examples:
[1 2 3 4 5] returns [1 2 3 4 5]
[10 11 12 13 14 15] returns [1 0 1 1 1 2]
[188 289] returns [9 9]
Solution Stats
Problem Comments
-
2 Comments
Please change the example [188 289] in your problem description to [188 189], as I believe [188 289] should return [9 1], rather than [9 9]. (By the way, great job picking 189 to use for a check. Right at the end of the two-digit numbers.)
uint8 is our friend.
Solution Comments
Show commentsProblem Recent Solvers78
Suggested Problems
-
3284 Solvers
-
Find a subset that divides the vector into equal halves
387 Solvers
-
Construct an index vector from two input vectors in vectorized fashion
389 Solvers
-
Reverse the elements of an array
1021 Solvers
-
788 Solvers
More from this Author10
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!