Level 1: while loop of Java loop structure
package step1;
public class HelloWorld {
public static void main(String[] args) {
/**********Begin**********/
int i = 1;
while( i<=6 ){
System.out.println("做了"+i+"个俯卧撑");
i++;
}
/**********End**********/
}
}Level 2: While loop exercise of Java loop structure
package step2;
public class HelloWorld {
public static void main(String[] args) {
/**********Begin**********/
int i = 1;
int sum = 0;
while(i<=100){
sum = sum + i;
i++;
}
System.out.println("1到100相加的结果为"+sum);
/**********End**********/
}
}Level 3: do...while loop of Java loop structure
package step3;
public class HelloWorld {
public static void main(String[] args) {
int count= 0; //定义变量存储6的倍数出现的次数
/*****start*****/
int i = 1;
do{
if(i%6==0){
count= count+1;
}
i++;
}while(i<=100);
/*****end*****/
System.out.println("6的倍数出现的次数为：" + count);
}
}Level 4: while, do...while loop test questions
Level 5: break and continue keywords
package step4;
public class HelloWorld {
public static void main(String[] args) {
int i = 0;
while(i <= 13){
i++;
/*****start*****/
if(i%2==0&&i<=13){
System.out.println(i+"是偶数");
i++;
}
if(i%2!=0&&i<=13 ) {
System.out.println(i+"是奇数");
}
/*****end*****/
}
}
}Level 6: break and continue keyword test questions
Level 7: The for loop of the Java loop structure
package step5;
import java.util.Scanner;
public class HelloWorld {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请给定一个自然数N：");
int N = sc.nextInt();//获取输入的整数N
int sum = 1;
/*****start*****/
for(int i = N;i>0;i--){
sum =sum*i;
}
/*****end*****/
System.out.println("自然数N的阶乘为" + sum);
}
}Level 8: for loop test questions
