同程笔试程序代码

题目1:
package org.example.tc;
import java.util.Scanner;

public class main1 {
    public static int mod=1000000007;
        public static void main(String[] args) {
            Scanner in = new Scanner(System.in);
            int n = in.nextInt();
            int m = in.nextInt();
            int ou =0;
            int ji=0;
            long  v=0;
            if(m%2==0){
                ji=m/2;
                ou=m/2;
            }else{
                ji=m/2+1;
                ou=m/2;
            }
            ji%=mod;
            ou%=mod;
            long  ans=ji;
            for(int i=2;i<=n;i++){
                if(i%2==0){
                    ans=((ans%mod)*(ou%mod))%mod;

                }else{
                    ans=((ans%mod)*(ji%mod))%mod;

                }
            }
            System.out.println(ans);

        }

}
题目2

package org.example.tc;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main2 {

    public static String t1 = &quot;registration complete&quot;;
    public static String t2 = &quot;illegal length&quot;;
    public static String t3 = &quot;acount existed&quot;;
    public static String t4 = &quot;illegal charactor&quot;;

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        long n = in.nextLong();
        Set<String> set = new HashSet<>();
        for (int i = 0; i < n; i++) {
            String s = in.nextLine();
            if (set.contains(s)) {
                System.out.println(t3);
            } else if (s.length() < 6 || s.length() > 12) {
                System.out.println(t2);
            } else if (judge(s)) {
                set.add(s);
                System.out.println(t1);
            }
        }
    }
 public static boolean judge(String s) {
        char c []=s.toCharArray();
        for(int i=0;i<c.length;){
            if((c[i]>='a'&amp;&amp;c[i]<='z')){
                i++;
            }else if(c[i]>='A'&amp;&amp;c[i]<='Z'){
                i++;
            }else {
                System.out.println(t4);
                return false;
            }

        }
        return true;
    }
 }
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