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-rwxr-xr-xchallenge-228/eric-cheung/python/ch-1.py8
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+
+## arrInt = [2, 1, 3, 2] ## Example 1
+## arrInt = [1, 1, 1, 1] ## Example 2
+arrInt = [2, 1, 3, 4] ## Example 3
+
+arrUniqInt = [nLoop for nLoop in list(set(arrInt)) if arrInt.count(nLoop) == 1]
+
+print (sum(arrUniqInt))