将char放入一个java字符串中,每N个字符 [英] Putting char into a java string for each N characters
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问题描述
我有一个长度可变的 java 字符串.
I have a java string, which has a variable length.
我需要将 "<br>"
放入字符串中,每 10 个字符.
I need to put the piece "<br>"
into the string, say each 10 characters.
例如这是我的字符串:
`this is my string which I need to modify...I love stackoverlow:)`
我如何获得这个字符串?:
How can I obtain this string?:
`this is my<br> string wh<br>ich I nee<br>d to modif<br>y...I love<br> stackover<br>flow:)`
谢谢
推荐答案
类似:
public static String insertPeriodically(
String text, String insert, int period)
{
StringBuilder builder = new StringBuilder(
text.length() + insert.length() * (text.length()/period)+1);
int index = 0;
String prefix = "";
while (index < text.length())
{
// Don't put the insert in the very first iteration.
// This is easier than appending it *after* each substring
builder.append(prefix);
prefix = insert;
builder.append(text.substring(index,
Math.min(index + period, text.length())));
index += period;
}
return builder.toString();
}
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