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循环有关问题?

发布时间: 2012-06-12 14:21:25 作者: rapoo

循环问题?急
怎么把数组String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};打印成
aa bb cc
dd ee gg
ff ll kk
ii
这样写报越界异常
for(int i=0;i<=str.length;)
{
for(int j=0;j<3;j++,i++)
{
System.out.print(str[i]);
}
System.out.println();

}
大虾门指点啊!

[解决办法]
for(int i=0;i<str.length;)
{
for(int j=0;j<3 && i<str.length;j++,i++)
{
System.out.print(str[i]);
}
System.out.println();

}

[解决办法]
String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};
for(int i=0;i<str.length;)
{
for(int j=0;j<3;j++,i++)
{
System.out.print(str[i] + " ");
}
System.out.println();

}
[解决办法]
为什么要用双重循环?

Java code
public class Test {    /**     * @param args     */    public static void main(String[] args) {        String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};        for(int i = 0; i < str.length; i++){            if(i > 0 && i % 3 == 0){                System.out.println();            }            System.out.print(str[i] + " ");        }    }}
[解决办法]
Java code
class TestContinue{    public static void main(String args[]){        String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};        int i = 0;        for(String n: str){            System.out.print(n + " ");            i++;            if(i%3 == 0){                System.out.println();                continue;            }        }    }}
[解决办法]
我傻了,干嘛用那个continue....
[解决办法]
Java code
class TestContinue{    public static void main(String args[]){        String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};        int i = 0;        for(String n: str)            System.out.print(n + ((++i)%3==0?"\n":"\t"));    }}
[解决办法]
楼上方法 精简之上
[解决办法]
Java code
String[] str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};        for(int i=0;i<str.length;i++){            if(i!=0){                if(i%3==0){                    System.out.println();                }else{                    System.out.print(" ");                }            }                        System.out.print(str[i]);        }
[解决办法]

探讨
Java code


class TestContinue{
public static void main(String args[]){
String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};
int i = 0;
for(String n: st……


[解决办法]
6楼的方法亮了~~
[解决办法]
探讨

为什么要用双重循环?

Java code


public class Test {

/**
* @param args
*/
public static void main(String[] args) {
String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"……

[解决办法]
Java code
public static void main(String[] args){    String []str={"aa","bb","cc","dd","ee","gg","ff","ll","kk","ii"};    for(int i=0; i<str.length; i++){        System.out.print(str[i] + ((i+1)%3==0?"\n":" "));    }}
[解决办法]
探讨
为什么要用双重循环?


Java code



public class Test {

/**
* @param args
*/
public static void main(String[] args) {
String []str={"aa","bb","cc","dd","ee","gg","ff","ll……

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