1素数和（5分）
题目内容：
我们认为2是第一个素数，3是第二个素数，5是第三个素数，依次类推。
现在，给定两个整数n和m，0 注意，是第n个素数到第m个素数之间的所有的素数，并不是n和m之间的所有的素数。 两个整数，第一个表示n，第二个表示m。 一个整数，表示第n个素数到第m个素数之间所有的素数的和，包括第n个素数和第m个素数。 2 4 15 你的程序要读入一个整数，范围是[-100000,100000]。然后，用汉语拼音将这个整数的每一位输出出来。 如输入1234，则输出： yi er san si 注意，每个字的拼音之间有一个空格，但是最后的字后面没有空格。当遇到负数时，在输出的开头加上“fu”，如-2341输出为： fu er san si yi 一个整数，范围是[-100000,100000]。 表示这个整数的每一位数字的汉语拼音，每一位数字的拼音之间以空格分隔，末尾没有空格。 -30 fu san ling
输入格式:
输出格式：
输入样例：
输出样例：
代码
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int m = in.nextInt();
int sum=0;
int sqt=0;
for(int i=1;i<20000;i++) {
for(int j=2;j<=i;j++) {
if(i%j==0&&i/j!=1) {
break;
}
if(j==i) {
sqt++;
if(n<=sqt&&m>=sqt) {
sum+=i;
}
}
}
}
System.out.println(sum);
}
}
2念整数（5分）
题目内容：
输入格式:
输出格式：
输入样例：
输出样例：
代码
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int inum = in.nextInt();
int num = Math.abs(inum);
int n1 = num / 100000;
int n2 = num / 10000 - n1 * 10;
int n3 = num / 1000 - n1 * 100 - n2 * 10;
int n4 = num / 100 - n1 * 1000 - n2 * 100 - n3 * 10;
int n5 = num / 10 - n1 * 10000 - n2 * 1000 - n3 * 100 - n4 * 10;
int n6 = num % 10;
if (inum < 0) {
System.out.print("fu ");
}
if (num>99999) {
switch (n1) {
case 0:
System.out.print("ling ");
break;
case 1:
System.out.print("yi ");
break;
case 2:
System.out.print("er ");
break;
case 3:
System.out.print("san ");
break;
case 4:
System.out.print("si ");
break;
case 5:
System.out.print("wu ");
break;
case 6:
System.out.print("liu ");
break;
case 7:
System.out.print("qi ");
break;
case 8:
System.out.print("ba ");
break;
case 9:
System.out.print("jiu ");
break;
}
}
if (num>9999) {
switch (n2) {
case 0:
System.out.print("ling ");
break;
case 1:
System.out.print("yi ");
break;
case 2:
System.out.print("er ");
break;
case 3:
System.out.print("san ");
break;
case 4:
System.out.print("si ");
break;
case 5:
System.out.print("wu ");
break;
case 6:
System.out.print("liu ");
break;
case 7:
System.out.print("qi ");
break;
case 8:
System.out.print("ba ");
break;
case 9:
System.out.print("jiu ");
break;
}
}
if (num>999) {
switch (n3) {
case 0:
System.out.print("ling ");
break;
case 1:
System.out.print("yi ");
break;
case 2:
System.out.print("er ");
break;
case 3:
System.out.print("san ");
break;
case 4:
System.out.print("si ");
break;
case 5:
System.out.print("wu ");
break;
case 6:
System.out.print("liu ");
break;
case 7:
System.out.print("qi ");
break;
case 8:
System.out.print("ba ");
break;
case 9:
System.out.print("jiu ");
break;
}
}
if (num>99) {
switch (n4) {
case 0:
System.out.print("ling ");
break;
case 1:
System.out.print("yi ");
break;
case 2:
System.out.print("er ");
break;
case 3:
System.out.print("san ");
break;
case 4:
System.out.print("si ");
break;
case 5:
System.out.print("wu ");
break;
case 6:
System.out.print("liu ");
break;
case 7:
System.out.print("qi ");
break;
case 8:
System.out.print("ba ");
break;
case 9:
System.out.print("jiu ");
break;
}
}
if (num>9) {
switch (n5) {
case 0:
System.out.print("ling ");
break;
case 1:
System.out.print("yi ");
break;
case 2:
System.out.print("er ");
break;
case 3:
System.out.print("san ");
break;
case 4:
System.out.print("si ");
break;
case 5:
System.out.print("wu ");
break;
case 6:
System.out.print("liu ");
break;
case 7:
System.out.print("qi ");
break;
case 8:
System.out.print("ba ");
break;
case 9:
System.out.print("jiu ");
break;
}
}
if (num>=0) {
switch (n6) {
case 0:
System.out.print("ling");
break;
case 1:
System.out.print("yi");
break;
case 2:
System.out.print("er");
break;
case 3:
System.out.print("san");
break;
case 4:
System.out.print("si");
break;
case 5:
System.out.print("wu");
break;
case 6:
System.out.print("liu");
break;
case 7:
System.out.print("qi");
break;
case 8:
System.out.print("ba");
break;
case 9:
System.out.print("jiu");
break;
}
}
}
}