C # Basic _ recursive methods several examples (13)

Source: Internet
Author: User

Recursion: It is itself that calls itself.

1  ///ask: To find the factorial of a number2         Static intFactor (intnum)3         {4             if(num==1)//decide when to start returning5             {6                 returnnum;7             }8             Else9             {Ten                 returnnum * Factor (--num);//the law of recursion One             } A}
1  //the product of all integers between two numbers (including boundaries)2         Static intGetResult (intNUM1,intnum2)3         {4             //First Judge Num1 and num2 which data is big5             if(Num1 >num2)6             {7                 inttemp =NUM1;8NUM1 =num2;9num2 =temp;Ten             } One             if(num2 ==num1)//determine under what circumstances the recursive call is no longer A             { -                 returnnum2; -             } the             Else -             { -                 returnNUM2 * GetResult (NUM1,--num2); -             } +}
1         //calculate array {1,1,2,3,5,8 ...} gets the number of the X position of the array index2         Static intGetindexof (intindex)3         {4 5             if(index==0|| index = =1)6             {7                 return 1;8             }9             ElseTen             { One                 returnGetindexof (Index-1) + getindexof (Index-2); A             } -}

C # Basic _ recursive methods several examples (13)

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