C # Learning Array 36 Select 7 Random number non-repetition/binary

Content:

The definition of an array is: data type [] variable name =new data type [n] variable name. Length indicates the value of the array;

  36 selected 7 random number is not duplicated
Static voidMain (string[] args) {            int[] A =New int[7];//1) Create a one-dimensional array first Random rand=NewRandom ();//2) defines stochastic computer generated random number;             for(inti =0; I <7; i++//3) To remove the repeated numbers by screening {int n =Rand. Next (36);//randomly generate a number of 36 0-35;n++;// display 1-36 bool Cunzai = false;//mark can be either bool number or F  or (int j = 0; J < A.length; J + +)//a.length means the length (value) of the array {if (A[j] = = N) {Cunzai = true;  To skip when there are equal in the array; ; }                }                //existence does not exist? If it doesn't exist, put it in a array, and if it exists, regenerate it .                if(Cunzai = =false)//{A[i]=n;//n into the array}Else{i--;//Because it does not conform to the operation to re-perform the random number, "i++" needs to be reduced before this;}} //Show             for(inti =0; i < a.length; i++) {Console.Write (A[i]+"\ t"); Output number}}

Binary Take-over:

Static void Main33 (string[] args)

        {            //Find            int[] A =New int[8] {2,9, One, -, +, -, -, + }; //Enter the number you want to find            intFind =Convert.ToInt32 (Console.ReadLine ()); // Subscript            intKaishi=0, jieshu=a.length-1, Zhongjian;  for (; ; ) {Zhongjian= (Kaishi + Jieshu)/2; if(A[zhongjian] = =find) {Console.WriteLine ("got it.");  Break; }                Else                {                    if(Find >A[zhongjian]) {Kaishi= Zhongjian +1; }                    Else{Jieshu= Zhongjian-1; }                    //                    if(Jieshu <Kaishi) {Console.WriteLine ("didn't find");  Break; }}}} to find the number and determine the location         Static voidMain2 (string[] args) {            //Find            int[] A =New int[8] {2,9, One, -, +, -, -, + }; //Enter the number you want to find            intFind =Convert.ToInt32 (Console.ReadLine ()); //Find            BOOLFound =false;  for(inti =0; I <= a.length-1; i++)            {                if(A[i] = =find) {                    //OutputFound =true; Console.WriteLine ("The number of {0} is found.", i +1);  Break; }            }                        //output found or not found            if(Found = =false) {Console.WriteLine ("not found"); }                    }

C # Learning Array 36 Select 7 Random number non-repetition/binary