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from itertools import combinations
## arrInts = [4, 1, 2, 3] ## Example 1
## arrInts = [1, 3, 7, 11, 15] ## Example 2
arrInts = [1, 5, 3, 8] ## Example 3
arrCombList = combinations(arrInts, 2)
arrOutput = []
nMinAbsDiff = max(arrInts) - min(arrInts)
for arrLoop in arrCombList:
nAbsDiff = abs(arrLoop[0] - arrLoop[1])
if nAbsDiff > nMinAbsDiff:
continue
if nAbsDiff < nMinAbsDiff:
nMinAbsDiff = nAbsDiff
arrOutput = []
arrOutput.append(sorted(list(arrLoop)))
print (sorted(arrOutput))
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