4-16美团面试

通过率都没有100%不知道为什么

第一题：

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scanner = new Scanner(System.in);
//        int stuNumber = 0;
//        int classNumber = 0;
//        String string = scanner.nextLine();
//        String[] str = string.split(" ");
//        stuNumber = Integer.valueOf(str[0]);
//        classNumber = Integer.valueOf(str[1]);

        //int[][] arr = new int[stuNumber][classNumber];
        int[][] arr = {
                {28,35 ,38 ,10 ,19 },
                {4, 76 ,72 ,38, 86 },
                {96, 80, 81, 17, 10 },
                {70, 64 ,86 ,85, 99 },
                {1, 93, 19 ,34, 41}};

//        for (int i = 0; i < arr.length; i++) {
//                System.out.println("请输入第"+(i+1)+"同学");
//                String classStu = scanner.nextLine();
//                String[] length = classStu.split(" ");
//                for (int j = 0; j < length.length; j++) {
//                    arr[i][j] = Integer.valueOf(length[j]);
//                }
//        }
        int temp = 0;
        Set<Integer> set = new HashSet<>();
        for (int i = 0; i < arr.length; i++) {
            int sum = arr[i][temp];
            int index = i;

                for (int j = 0; j < arr.length; j++) {
                    if(arr[j][temp] > sum) {
                        sum = arr[j][temp];
                        index = j;
                    }
                }
                temp++;
                set.add((index+1));
                System.out.println("最大为"+sum+"第"+(index+1)+"位同学");

        }
        System.out.println(set.size());
    }

}

第二题

public class Test2 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scanner = new Scanner(System.in);
String str = scanner.nextLine();
String[] strings = str.split(" ");
int a = Integer.valueOf(strings[0]);
int b = Integer.valueOf(strings[1]);
int m = Integer.valueOf(strings[2]);
int x = Integer.valueOf(strings[3]);
Set<Integer> set = new HashSet<>();
Set<Integer> set2 = new HashSet<>();
int i = 100;
while(i>0) {
    x = (a*x+b)%m;
    if(set.size() == 0) {
        set.add(x);
    }else {
         if(set.contains(x)) {
             set2.add(x);
             if(set2.equals(set)) {
                 break;
             }
        }else {
            set.add(x);
        }


    }
    i--;
}
System.out.println(set2.size());

    }

}

第三题

public class Test3 {


//    3 4
//    3 1 2
    public static void main(String[] args) {
        // TODO Auto-generated method stub
int a = 3, b = 4, c= 3, d = 1,f=2;
        Scanner scanner = new Scanner(System.in);
        String string = scanner.nextLine();
        String[] parm1 = string.split(" ");
        a = Integer.valueOf(parm1[0]);
        b = Integer.valueOf(parm1[1]);
        System.out.println("b:"+b);
        String string2 = scanner.nextLine();
        String[] parm2 = string2.split(" ");
        int[] arr = new int[parm2.length];
        for (int i = 0; i < parm2.length; i++) {
            arr[i] = Integer.valueOf(parm2[i]);
        }
        Arrays.sort(arr);
        System.out.println("0--");
        System.out.println(Arrays.toString(arr));
        Node[] nodes = new Node[a*a];
         int k = 0;
         int size = 0;
for(int i=0;i<a;i++) {
      for(int j=0;j<arr.length;j++) {
          Node node = new Node();
          node.x = arr[k];
          node.y = arr[j];
          nodes[size] = node;
          size++;
          System.out.println(nodes[i]);
      }
      k++;
}
System.out.println(nodes);
System.out.println("ss"+nodes[b-1]);

    }

}

class Node{
    public int x;
    public int y;
    @Override
    public String toString() {
        return "("+x+","+y+")";
    }

}

4-16美团面试

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