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from itertools import combinations
def get_GoodPairs_List(arrInput):
arrGoodPairsList = []
nIndxTuple = combinations(range(0, len(arrInput)), 2)
for nIndxLoop_01, nIndxLoop_02 in list(nIndxTuple):
if arrInput[nIndxLoop_01] == arrInput[nIndxLoop_02]:
arrGoodPairsList.append([nIndxLoop_01, nIndxLoop_02])
return arrGoodPairsList
## arrInputList = [1, 2, 3, 1, 1, 3] ## Example 1
## arrInputList = [1, 2, 3] ## Example 2
arrInputList = [1, 1, 1, 1] ## Example 3
print (len(get_GoodPairs_List(arrInputList)))
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