What is this digit operation?
0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...
Solution Stats
Problem Comments
Recent Solvers70
Suggested Problems
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First non-zero element in each column
434 Solvers
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173 Solvers
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Generate a string like abbcccddddeeeee
152 Solvers
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142 Solvers
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288 Solvers
More from this Author45
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