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## arrInput = [1, 2, 3, 4] ## Example 1
arrInput = [2] ## Example 2
def IsArithmetic(arrSubInput):
if len(arrSubInput) < 3:
return False
nDiff = arrSubInput[1] - arrSubInput[0]
for nLoop in range(2, len(arrSubInput)):
if arrSubInput[nLoop] - arrSubInput[nLoop - 1] != nDiff:
return False
return True
arrOutput = []
for nLen in range(3, len(arrInput) + 1):
for nIndx in range(0, len(arrInput) - nLen + 1):
if IsArithmetic(arrInput[nIndx:nIndx + nLen]):
arrOutput.append(arrInput[nIndx:nIndx + nLen])
print (arrOutput)
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