例如:
i_am-a_student 转为:iAmAStudent
I-can_do-it 转为:ICanDoIt
代码:
import java.util.regex.Matcher; import java.util.regex.Pattern; class Solution{ //方法一 static String toCamelCase(String s){ while(s.contains("_")){ int num=s.indexOf("_",1); if((num+1)<=s.length()){ String aa=s.charAt(num+1)+""; s=s.replace("_"+aa.trim(),aa.toUpperCase()); } } while(s.contains("-")){ int num=s.indexOf("-",1); if((num+1)<=s.length()){ String aa=s.charAt(num+1)+""; s=s.replace("-"+aa.trim(),aa.toUpperCase()); } } return s; } //方法二 static String toCamelCase2(String s){ Matcher m = Pattern.compile("[_|-](\\w)").matcher(s); StringBuffer sb = new StringBuffer(); while (m.find()) { m.appendReplacement(sb, m.group(1).toUpperCase()); } return m.appendTail(sb).toString(); } public static void main(String[] args) { String s="as_hi-ai_d"; System.out.println(toCamelCase(s)); System.out.println(toCamelCase2(s)); } }