Remember the algorithm exercise

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Algorithms have always been their own weaknesses. Learn the language by algorithm

Java Edition:

/** * Algorithm Exercise 1 * Created by Exile on 2017/5/25. * 1 N (n is even) number, divide the number into N/2 group, make each group of numbers and equal. */public class ArithmeticTest1 {//topic 1 even number of arrays public static void main (string[] args) {int[] Evennumberarry = n        EW Int[]{1, 7, 2, 7, 6, 5, 2, 8, 3, 4};        int arrynum = evennumberarry.length/2;//1 calculates sum;        int sum = 0;        for (int i:evennumberarry) {sum = sum + i;        }//2 calculates the number of each group and how many int arrymax = Sum/arrynum;            for (int i = 0; i < evennumberarry.length; i++) {int value = Arrymax-evennumberarry[i]; int temp;//assumes that there must be a set of for (int j = i + 1; j < Evennumberarry.length; J + +) {if (even                    NUMBERARRY[J] = = value) {temp = evennumberarry[i + 1];                    Evennumberarry[i + 1] = value;                EVENNUMBERARRY[J] = temp;        }}} for (int i:evennumberarry) {System.out.println (i);   } }}import java.util.arraylist;import java.util.random;/** * Algorithm Exercise 2 * Created by Exile on 2017/5/25. * NXN chess board, each lattice can put a car, there are M cars, Q: After each car put out, how many grid is left out of all the car attack range?        * Cars can overlap */public class ArithmeticTest2 {public static void main (string[] args) {//n and M int m = 3;        int n = 3;        arraylist<model> modellist = createmodellist (m, n);        arraylist<model> manlist = new arraylist<> ();        for (model Model:modellist) {System.out.println ("Current model:" + model.tostring ());                }//Method 1: Repeat from start to end (int i = 0; i < n; i++) {for (int j = 0; J < N; j + +) {            Manlist.add (New Model (I, j)); }} System.out.println ("Pre-Filter:" + manlist.size ());//The problem is too fast for (int i = 0; i < modellist . Size (); i++) {for (int j = 0; J < Manlist.size (); j + +) {if (!modellist.get (i). Getattackoutcall (manl       Ist.get (j))) {Manlist.remove (j);         }}}//} System.out.println ("Filtered:" + manlist.size ());        for (Model model:manlist) {System.out.println (model.tostring ()); }}/** * generates a corresponding number of M objects based on the MN input * * @param m * @param n * @return */private static ArrayList        <Model> createmodellist (int m, int n) {arraylist<model> models = new arraylist<> ();        for (int i = 0; i < m; i++) {Models.add (new Model (n));    } return models;        } public static class Model {private int x;        private int y;            public Model (int n) {random random = new random ();            this.x = Random.nextint (n);        This.y = Random.nextint (n);            } public Model (int x, int y) {this.x = x;        This.y = y;        } public int GetX () {return x;        } public int GetY () {return y; } @Override PubliC String toString () {return "model{" + "x=" + x + ", y=" + y +        '}'; } public boolean Getattackoutcall (Model mainmodel) {if (this.getx () = = Mainmodel.getx () | | this.gety ()            = = Mainmodel.gety ()) {return false;        } return true; }    }}

Version Golang: