Randomize a series

This function randomizes a series of integers for which you define the beginning and end points of the series.

For example, randomizing numbers from 6 to 10 is like shuffling 5 cards labelled 6 to 10. To randomize a series of 49 possible lottery numbers enter x as 1 and y as 49:

Random allocation of numbers in a series

Randomized with seed: 10
1	42
2	49
3	16
4	13
5	41
6	1
7	19
8	7
9	15
10	40
11	11
12	6
13	47
14	46
15	45
16	2
17	23
18	36
19	5
20	27
21	21
22	43
23	37
24	18
25	25
26	34
27	9
28	14
29	17
30	22
31	35
32	38
33	32
34	29
35	33
36	31
37	26
38	4
39	28
40	30
41	10
42	44
43	8
44	39
45	12
46	48
47	3
48	24
49	20

You could then take the first, say six, as your random selection.

Technical validation

Robust (pseudo-)random number generation is used, see random number generation.