我如何在扫描仪中输入一个字符串并将其转换为字符，然后该字符成为我的堆栈？

Question

我是 java 的新手，我被代码困住了，因为我不知道我的角色如何变成我的堆栈

Stack<Character> charStack = new Stack<Character>();
        Scanner scan = new Scanner(System.in);
        System.out.print("Input a word: ");
        String str = scan.nextLine();
        char[] char1 = new char [str.length()];

        for (int b = 0; b<char1.length; b++){
            charStack.push(b);
            System.out.println(charStack);
            charStack.pop(); 
}

error: incompatible types: int cannot be converted to Character charStack.push(b);

   and the output should be:
      ['W','O','R','D']
      ['W','O','R']  
      ['W','O'] 
      ['W']

Answer 1

您的代码有两个问题

而不是 char[] char1 = new char [str.length()]; 将您的输入字符串转换为这样的字符数组 str.toCharArray()

然后不是将 index 整数压入字符栈，而是压入字符 charStack.push(charArray[i]);

public static void main(String[] args) {
   Stack<Character> charStack = new Stack<Character>();
    Scanner scan = new Scanner(System.in);
    System.out.print("Input a word: ");
    String str = scan.nextLine();
    char[] charArray = str.toCharArray();
    for (int i = 0; i < charArray.length; i++) {
        charStack.push(charArray[i]);
    }
    while (!charStack.empty()) {
        System.out.println(charStack);
        charStack.pop();
    }
}

我如何在扫描仪中输入一个字符串并将其转换为字符，然后该字符成为我的堆栈？

How can I input a string in a scanner and convert it into character and that character becomes my stack?

java

arrays

stack

character