2注意:如果给定索引处的字符是补充字符,则此方法不会删除整个字符。 如果需要的准确处理增补字符,确定数量char通过调用删除Character.charCount(thisSequence.codePointAt(index)) ,其中thisSequence是此序列。 1sb.delete(0, sb.length());//清空缓存区,这样该区域还可以再使用23//不要用新建一个StringBuffer 对象...
空参构造.public StringBuilder();创建一个空白可变字符串对象, 不含有任何内容. 带一个字符串参数的构造.public StringBuilder(String str);根据字符串的内容来创建可变字符串对象. StringBuilder 对象的成员方法: public StringBuilder append(任意类型);添加数据并返回对象本身. public StringBuilder reverse();反转容器...
StringBuilder.Remove 从当前 StringBuilder 对象中移除指定数量的字符。 StringBuilder.Replace 替换指定索引处的指定字符。 其实还有一个stringBuffer,可将字符串缓冲区安全的用于多个线程,可以在必要时同步,所以操作就像是以串行顺序发生,该顺序与所涉及到的每个线程进行的方法调用一致。 他们三者的优先使用顺序:stringBuilde...
void replace(int start, int end, String str) 根据索引把某部分替换成其它的。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 StringBuilder sb=newStringBuilder("春眠不觉晓,处处闻啼鸟。");sb.replace(8,11,"蚊子咬");System.out.println(sb);// 输出结果为:春眠不觉晓,处处蚊子咬。 void del...
StringBuilder.Insert Inserts a string or object into the specified index of the current StringBuilder. StringBuilder.Remove Removes a specified number of characters from the current StringBuilder. StringBuilder.Replace Replaces all occurrences of a specified character or string in the current StringBuilder ...
publicSystem.Text.StringBuilderReplace(charoldChar,charnewChar); Parameters oldChar Char The character to replace. newChar Char The character that replacesoldChar. Returns StringBuilder A reference to this instance witholdCharreplaced bynewChar. ...
startIndex plus count indicates a character position not within this instance. -or- Enlarging the value of this instance would exceed its maximum capacity. Remarks The strings to replace are checked on an ordinal basis; that is, the replacement is not culture-aware. If newValue is ...
StringBuilder.ReplaceReplaces a specified character at a specified index. Append TheAppendmethod can be used to add text or a string representation of an object to the end of a string represented by the currentStringBuilder. The following example initializes aStringBuilderto "Hello World" and then...
System.out.println("After replace: " + buffer); // 用ch字符替换指定位置的字符 buffer.setCharAt(3, 'a'); System.out.println("After setCharAt: " + buffer); // 根据索引获取字符 char ch = buffer.charAt(3); System.out.println("Character at index 3: " + ch); ...
这不是最理想的,因为它们可能有100000多个字符。 如果你只接受你想要的,你可能会找到更好的结果。 public static string CleanInput(string input) { //a-zA-Z allows any English alphabet character upper or lower case //\[ and \] allows [] //\s allows whitespace var regex = new Regex(@"[a-...