challenge-282/eric-cheung/python/ch-2.py


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## strInput = "pPeERrLl"  ## Example 1
## strInput = "rRr"  ## Example 2
strInput = "GoO"  ## Example 3

arrCount = [0 if strInput[nIndx].lower() == strInput[nIndx + 1].lower() else 1 for nIndx in range(len(strInput) - 1)]

print (sum(arrCount))