Write a function that concatenates whole numbers.
numcat(111,222) should return 111222
numcat(1,2,3,4,5) should return 12345
Back and Forth Rows
Matrix indexing with two vectors of indices
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Flip the bit
Whole Number Un-Concatenator
Airline Ticket Mod7 Checksum
Factorions: Numbers that equal the sum of the factorials of their digits
Dudeney Numbers: Numbers which are the cube of their decimal sum
What is the nth step in Conway's Life?
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