反转字符串中的每个单词并将单词的开头大写

Question

样本输入:

abc def ghi

样本输出:

Cba Fed Ihg

这是我的代码:

import java.util.Stack;

public class StringRev {
    static String output1 = new String();
    static Stack<Character> stack = new Stack<Character>();
    public static void ReverseString(String input) {
        input = input + " ";
        for (int i = 0; i < input.length(); i++) {
            boolean cap = true;
            if (input.charAt(i) == ' ') {
                while (!stack.isEmpty()) {
                    if (cap) {
                        char c = stack.pop().charValue();
                        c = Character.toUpperCase(c);
                        output1 = output1 + c;
                        cap = false;
                    } else
                        output1 = output1 + stack.pop().charValue();
                }
                output1 += " ";
            } else {
                stack.push(input.charAt(i));
            }
        }
        System.out.print(output1);
    }
}

更好的解决方案？

Answer 1

利用

StringBuilder#reverse()

然后不添加任何第三方库,

    String originalString = "abc def ghi";
    StringBuilder resultBuilder = new StringBuilder();
    for (String string : originalString.split(" ")) {
        String revStr = new StringBuilder(string).reverse().toString();
        revStr = Character.toUpperCase(revStr.charAt(0))
                + revStr.substring(1);
        resultBuilder.append(revStr).append(" ");
    }
    System.out.println(resultBuilder.toString());  //Cba Fed Ihg 

进行演示