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You recently claimed "There are *no* competent C programmers here 
(except little ol' me)."

It's long past time for you to begin trying to prove your programming 
competency (you NEVER have, in any language).

Write one C routine that will compute the 3 quartiles of any dataset of 
positive integers.  Quartiles subdivide the datasets into 4ths by median.

Here are some random datasets to work from.

N = 20:
3 9 9 12 17 22 29 29 33 35 36 37 40 44 46 49 50 51 55 57

N = 21:
3 3 4 4 4 7 8 9 13 17 30 32 34 36 38 42 43 43 45 48 54

N = 30:
6 12 13 17 19 20 20 20 22 23 29 32 34 40 41 42 44 46 48 50 61 64 66 68 
69 72 73

N = 31:
6 10 10 15 19 21 21 31 36 42 44 48 50 50 51 52 58 62 68 69 70 70 72 76 
81 82 82 84 84 92 93


Use this method:
Q1 = median of lower half not including Q2
Q2 = median of dataset
Q3 = median of upper half not including Q2

Example
1 2 3 4 5 6 7 8 9 10 11

Q1 = 3
Q2 = 6
Q3 = 9


I've already written such code, in C and python.  And I posted both to 
clc, so don't cheat and plagiarize it from there or elsewhere as you 
often do.

See you NEVER, fraudulent lying asshole.