java数据结构：创建方法 add（String[] strList ,int index, String str ）{方法自己写}//用于向strList的index位置插入str。
请各位大佬帮忙 多谢

package com.xiaoa.demo;

/*java数据结构：创建方法 add（String[] strList ,int index, String str ）{方法自己写}//用于向strList的index位置插入str。
请各位大佬帮忙 多谢 */
public class ArrayTest {
    public static void main(String[] args) {
        String[] strList = new String[] { "你", "好" };
        String[] strList2 = add(strList, 2, "啊");
        for (String string : strList2) {
            System.out.println(string);
        }
    }

    public static String[] add(String[] strList, int index, String str) {
        String[] strList2 = new String[strList.length+1];
        for(int i=0;i<strList2.length;i++) {
            if(i<index) {
                strList2[i]=strList[i];
            }
            if(i==index) {
                strList2[i] = str;
            }
            if(i>index) {
                strList2[i]=strList[i-1];
            }
        }
       

        return strList2;

    }
}

public class addDemo {
    public static void main(String[] args) {
        String []strList={"a","c","d"};
        int index=1;
        String str="b";
        String []newStrList=add(strList ,1,"b");
        for (String st : newStrList) {
            System.out.print(st+" ");
        }
    }

    public static String[] add(String[] strList, int index, String str) {
        ArrayList<String> arr = new ArrayList<String>();
        for (int i = 0; i <=strList.length; i++) {
            if (i<index) {
                arr.add(strList[i]);
            }else if(i==index){
                arr.add(str);
            }else {
                arr.add(strList[i-1]);
            }
        }
        String[] newstrList = arr.toArray(strList);
        return newstrList;
    }
}

public class addDemo {
    public static void main(String[] args) {
        String []strList={"a","c","d"};
        String []newStrList=add(strList ,1,"b");
        for (String st : newStrList) {
            System.out.print(st+" ");
        }
    }

    public static String[] add(String[] strList, int index, String str) {
        ArrayList<String> arr = new ArrayList<String>();
        for (int i = 0; i <=strList.length; i++) {
            if (i<index) {
                arr.add(strList[i]);
            }else if(i==index){
                arr.add(str);
            }else {
                arr.add(strList[i-1]);
            }
        }
        String[] newstrList = arr.toArray(strList);
        return newstrList;
    }
}
再删一点...

你来个更短的呗

俺はこれを上手ではありませんよう

版主好.握个爪~

我又来了,集合有添加方法,忘了用,罪过...
public class Demo {
    public static void main(String[] args) {
        String []strList={"a","c","d"};
        String []newStrList=add(strList ,1,"b");
        for (String st : newStrList) {
            System.out.print(st+" ");
        }
    }

    public static String[] add(String[] strList, int index, String str) {
        ArrayList<String> arr = new ArrayList<String>();
        for (int i = 0; i < strList.length; i++) {
            arr.add(strList[i]);
        }
        arr.add(index, str);
        String[] newstrList = arr.toArray(strList);
        return newstrList;
    }
}

厉害了