代码如下,我测试过了,应该满足你的需求。。希望对你有帮助,仍有问题可以HI我。。。。public class Test { public static void main(String args[]) {String s = "123214214";String result = "";// 保存结果for (int i = 0; i < s.length(); i += 2) { if (i + 1 < s.length())
result += "" + s.charAt(i) + s.charAt(i + 1) + " "; else
// 长度为基数时执行
String str ="12321421";String result = "";for(int i = 0; i < str.length(); i += 2) { if(i + 1 < str.length()) {
result += str.substring(i,i + 2);
result += "