[Code Hoof Set Novice Village 600 Questions] Merge two numbers without passing a character array

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Reference code:

#includeusing namespace std;int main( ){int data1 = 0, data2 = 0;cin >> data1;cin >> data2;int end = (data2%10)*1000+(data1/10)*100+(data2/10)*10+data1%10;cout << end;return 0;}