Java 字符串替换函数：使用占位符 %s 替换参数

public static String replace(String str, char[] arg) { String[] parts = str.split('%s'); StringBuilder result = new StringBuilder(parts[0]); int argIndex = 0; for (int i = 1; i < parts.length; i++) { if (argIndex < arg.length) { result.append(arg[argIndex]); argIndex++; } result.append(parts[i]); } while (argIndex < arg.length) { result.append(arg[argIndex]); argIndex++; } return result.toString(); }