import random
 
def checkdisplacement(nums):
    nums2=nums[:]
    nums.sort()
    le=len(nums)
    sumpos=0
    for i in range(le):
        j=nums.index(nums2[i])
        sumpos+=abs(j-i)
    rd=sumpos/le
    rdr=rd/le
    rc=le/3.-1./(3.*le)
    rcr=rc/le
    return rdr,rcr
 
nums=[random.uniform(0.,1.) for i in range(10000)]
print('Uniform:   ','\t', checkdisplacement(nums))
 
nums=[random.triangular(-2.,2.) for i in range(10000)]
print('Triangular: ','\t', checkdisplacement(nums))
 
nums=[random.gauss(3.,1.) for i in range(10000)]
print('Gauss:     ','\t', checkdisplacement(nums))
 
nums=[random.lognormvariate(10.,1.) for i in range(10000)]
print('Lognormal: ','\t', checkdisplacement(nums))
 

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