LeetCode --- 1863. Sum of All Subset XOR Totals 解题报告
Content:TheXORtotalofanarrayisdefinedasthebitwiseXORofallitselements,or0ifthearrayisempty.Forexample,theXORtotalofthearray[2,5,6]is2XOR5XOR6=1.Givenanarraynums,returnthesumofallXORtotalsforeverysubset