48 lines
1.4 KiB
Java
48 lines
1.4 KiB
Java
package com.inmind.for03;
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/*
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for , while ,do-while 循环
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循环三要素：循环变量初始化、循环条件、修改循环变量
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for循环的格式：
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for(循环变量初始化①;循环条件②;修改循环变量④){
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循环语句③
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}
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执行顺序：①②③④>②③④>②③④…②不满足为止。
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*/
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public class Demo05 {
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public static void main(String[] args) {
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//打印1~10的值
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for(int i = 1;i<=10;i++){
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System.out.println(i);
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}
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System.out.println("程序结束");
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System.out.println("-----------------------");
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//打印10~1的值
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for(int j = 10;j>=1;j--){
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System.out.println(j);
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}
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System.out.println("-----------------------");
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//打印a~z的值字符 a = 97 z = 122
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for(int i = 97; i <=122;i++){
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System.out.println((char) i);
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}
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System.out.println("-----------------------");
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for (char i = 'a'; i <= 'z'; i++) {
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System.out.println(i);
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}
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System.out.println("-----------------------");
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for (char i = 'z'; i >= 'a'; i--) {
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System.out.println(i);
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}
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System.out.println("-----------------------");
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//打印100次"hello world"
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for (int i = 1; i <= 100; i++) {
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System.out.println("helloworld");
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}
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}
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}
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