如何在Android中每2个字符后将特殊符号连接为冒号 [英] How to concatenate Special symbol as colon after every 2 character in Android

问题描述

我想在String中每隔2个字符后连接或附加特殊字符，例如冒号:.

I want to concatenate or append special character as colon : after an every 2 character in String.

例如:原始字符串如下:

For Example: Original String are as follow:

String abc =AABBCCDDEEFF;

在连接或附加冒号之后如下:

After concatenate or append colon are as follow:

  String abc =AA:BB:CC:DD:EE:FF;

所以我的问题是我们如何在android中实现这一目标.

So my question is how we can achieve this in android.

先谢谢了.

推荐答案

如果要不使用Math类函数，可以尝试下面的代码.

You can try below code, if you want to do without Math class functions.

StringBuilder stringBuilder = new StringBuilder();
    for (int a =0; a < abc.length(); a++) {
        stringBuilder.append(abc.charAt(a));
        if (a % 2 == 1 && a < abc.length() -1)
            stringBuilder.append(":");
    }

这里

1. a％2 == 1 ** ==>此条件语句用于附加**:"
2. a<abc.length()-1 ==>此条件语句用于不添加:"

1. a % 2 == 1 ** ==> this conditional statement is used to append **":"
2. a < abc.length() -1 ==> this conditional statement is used not to add ":"

在最后一个条目中.希望这是有道理的.如果您发现任何问题，请告诉我.

in last entry. Hope this makes sense. If you found any problem please let me know.

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