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edited Mar 7, 2012 at 12:26

Q (19 characters)

f:{(neg x)?y+til z}

Then use f[-x;y;z]f[x;y;z] as [count of numbers in output set;starting point;size of range]

e.g. f[-5;10;10]f[5;10;10] will output 5 distinct random numbers between 10 and 19 inclusive.

q)\ts do[100000;f[-100;1;10000]]do[100000;f[100;1;10000]]
2418 131456j

Results above show performance at 100,000 iterations of picking 100 random numbers between 1 & 10,000.

f:{x?y+til z}

Then use f[-x;y;z] as [count of numbers in output set;starting point;size of range]

e.g. f[-5;10;10] will output 5 distinct random numbers between 10 and 19 inclusive.

q)\ts do[100000;f[-100;1;10000]]
2418 131456j

Results above show performance at 100,000 iterations of picking 100 random numbers between 1 & 10,000.

f:{(neg x)?y+til z}

Then use f[x;y;z] as [count of numbers in output set;starting point;size of range]

e.g. f[5;10;10] will output 5 distinct random numbers between 10 and 19 inclusive.

q)\ts do[100000;f[100;1;10000]]
2418 131456j

Results above show performance at 100,000 iterations of picking 100 random numbers between 1 & 10,000.

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created Mar 5, 2012 at 12:37

f:{x?y+til z}

Then use f[-x;y;z] as [count of numbers in output set;starting point;size of range]

e.g. f[-5;10;10] will output 5 distinct random numbers between 10 and 19 inclusive.

q)\ts do[100000;f[-100;1;10000]]
2418 131456j

Results above show performance at 100,000 iterations of picking 100 random numbers between 1 & 10,000.