1 2 3 4 5 6 7 8 9 = 81 Add a subtraction number between 1-9 to set up the equation

1 /************************************************************************/2 /*1 2 3 4 5 6 7 8 9 = 81 Add the subtraction number between 1-9 to set the equation. */3 /************************************************************************/4#include <iostream>5 using namespacestd;6 7 BOOLStop =false;//Control Traversal Termination8 intCount_ =0;//number of calculated results9 intCount_loop =0;//count the number of cyclesTen  One voidTransint* Arr,intIndex//increment traversal from right to left A { -     if(Index <0) -         return; the     inttemp = Arr[index]/4; -     if(Temp <=0)//Determine if rounding is required -         return; -Arr[index] = Arr[index]%4; +     if(Index = =0)//determine if you have traversed -     { +Stop =true; A         return; at     } -Arr[index-1] +=temp; -Trans (arr, index-1); - } -  - voidShowint* Symbol,intLen//process Each traversal result and display the correct item in { -     floatnumber[9]= {1,2,3,4,5,6,7,8,9}; to     intsymbol_copy[9]; +      for(inti =0; I <9; ++i) -     { theSymbol_copy[i] =Symbol[i]; *     } $     /*Panax Notoginseng calculates the result with the multiplication number, placing the preceding item at 0, the symbol follows the preceding symbol -     */ the      for(inti =0; I < Len-1; i++)//Merging multiplication Items +     { A         if(Symbol_copy[i] = =2|| Symbol_copy[i] = =3) the         { +             if(Symbol_copy[i] = =2)//calculate the merged results -             { $number[i+1] = number[i] * number[i+1]; $             } -             Else if(Symbol_copy[i] = =3) -             { thenumber[i+1] = Number[i]/number[i+1]; -             }WuyiNumber[i] =0;//Merge the previous number 0 the  -             if(i = =0) WuSymbol_copy[i] =0; -             Else AboutSymbol_copy[i] = symbol_copy[i-1];//multiplication result merge, symbol replaced with previous symbol $         } -     } -  -     floatnum = number[0]; A      for(inti =0; I < Len-1; ++i)//Calculation Results +     { the         if(Symbol_copy[i] = =0) -num + = number[i+1]; $         Else if(Symbol_copy[i] = =1) thenum-= number[i+1]; the     } the  the     if(num = =Bayi)//print the correct equation -     { incount_++; the          for(inti =0; I < Len-1; ++i) the         { Aboutcout<<i+1; the             if(Symbol[i] = =0) thecout<<"+"; the             Else if(Symbol[i] = =1) +cout<<"-"; -             Else if(Symbol[i] = =2) thecout<<"*";Bayi             Else if(Symbol[i] = =3) thecout<<"/"; the         } -cout<<"9=81"<<Endl; -     } the } the  the  the intMain () - { the     intsymbol[9] = {0};//[0:+ 1:-2:* 3:/] the     intLen =9; the      while(!stop)94     { the Show (symbol, Len); thesymbol[len-2]++; theTrans (symbol, len-2);98count_loop++; About     } -cout<<"have a"<<count_<<"kind of possible"<<Endl;101cout<<"traversed the"<<count_loop<<"Times"<<Endl;102System"Pause");103     return 0;104}

1 2 3 4 5 6 7 8 9 = 81 Add a subtraction number between 1-9 to set up the equation