java如何判斷一個字符串某個字符有幾個

判斷長度 "abc".length() 判斷某個字du符有zhidao幾個 String a = "abbdfsads"; int n = a.length()-a.replaceAll("a", "").length();System.out.println("字符串zhuan字符 ...

Wed Mar 03 16:50:00 CST 2021 0 1640
 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM