Question: Define a function 'lcm' that returns the least common multiple of two integers, as an integer.
More Information:
https://en.wikipedia.org/wiki/Least_common_multiple
q)lcm[12;80]
240
q)lcm[12;13]
156
q)lcm[12;12]
12
gcd:{$[y=0;x;.z.s[y;x mod y]]}
lcm:{div[x*y] gcd[x;y]}
Explanation: The least common multiple of two numbers is their product divided by their greatest common divisor. Use 'div' instead of '%' to return an integer.
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