Table of contents
Level 1: Java loop structure while loop
Level 2 Java loop structure while loop exercise
Level 3 Java loop structure do...while loop
Level 4 while, do...while loop test questions Edit
Level 5 break and continue keywords
Level 6 break and continue keyword test questionsEdit
Level 7 Java loop structure for loop
Level 8 for loop test questionsEdit
Level 1: Java loop structure while loop
package step1;
public class HelloWorld {
public static void main(String[] args) {
/*****start*****/
int i=1;
while(i<=6){
System.out.println("做了"+i+"个俯卧撑");
i++;
}
/*****end*****/
}
}
Level 2 Java loop structure while loop exercise
package step2;
public class HelloWorld {
public static void main(String[] args) {
/*****start*****/
int i=1,n=0;
while(i<=100){
n+=i;
i++;
}
System.out.println("1到100相加的结果为"+n);
/*****end*****/
}
}
Level 3 Java loop structure do...while loop
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=0;
do{
i++;
if(i%6==0){
count++;
}
}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 <= 20){
i++;
/*****start*****/
if( i%2==0 ){
System.out.println( i + "是偶数");
}else
System.out.println(i + "是奇数");
if( i==13 ) {
break;
}
/*****end*****/
}
}
}
Level 6 break and continue keyword test questions
Level 7 Java loop structure for loop
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=1;i<=N;i++){
sum*=i;
}
/*****end*****/
System.out.println("自然数N的阶乘为" + sum);
}
}
Level 8 for loop test questions