Question

我如何打印笑脸包围的给定角色？这是我到目前为止所做的，但它只打印一个长的水平字符串。

public class Smileys {

    public static void main(String[] args) {

        printWithSmileys("\\:D/");
        printWithSmileys("92.");

    }

    private static void printWithSmileys(String characterString) {
        for (int i = 0; i < characterString.length(); i++) {
            int numberOfSmileys = characterString.charAt(i);

            for (int j = 0; j < numberOfSmileys; j++) {
                System.out.print(":)");
            }
            System.out.println("");
        }
    }

}

输出应该如下所示。

:):):):):)
:) \:D/ :)
:):):):):)
:):):):):)
:) 92.  :)
:):):):):)

Answer 1

private static void printWithSmileys(String characterString) {
    for (int i = 0; i < characterString.length(); i++) {
        int numberOfSmileys = characterString.charAt(i);

这里有编译错误String.charAt（int index）返回一个char，不能设置为int数据类型。

        for (int j = 0; j < numberOfSmileys; j++) {
            System.out.print(":)");
        }
        System.out.println("");
    }
}

我想你想要的是......

    for (int i = 0; i < 3; i++) {
        System.out.print(":)")
        for (int j = 0; j < characterString.length(); j++) {
            if(i % 2 != 0){
                 if(j == 0 || j == characterString.length()-1){
                      System.out.print(":)");
                 }else{
                      System.out.print(characterString.charAt(j-1));
                 }
            }else{
                 System.out.print(":)");
            }
        }
        System.out.println("");
    }

没有经过测试，但是开始的好地方。

Answer 2

这是一个带注释的解决方案。玩得开心:)）

public static void main(String[] args) {

    printWithSmileys("\\:D/");
    printWithSmileys("92.");

}

private static void printWithSmileys(String string) {
    // Find the length of our line in smiley 
    // (smiley length is 2 so we divide by 2 and add one to round up)
    int length = (string.length()+1)/2;
    // Add one smiley on each side, plus 2 smiley
    length += 2;
    // Add one smiley for the two spaces surrounding our string
    length += 1;
    // Add one space if length is an odd number
    if (string.length()%2 != 0)
        string += " ";

    //Print first line
    printSmileyLine(length);

    //Print middle line
    System.out.print(":) ");
    System.out.print(string);
    System.out.print(" :)");
    System.out.println("");

    //Print last line
    printSmileyLine(length);
}

/**
 * Print length smiley 
 */
private static void printSmileyLine(int length) {
    for (int i=0; i<length; i++)
        System.out.print(":)");
    System.out.println("");
}

打印由笑脸包围的给定角色

2 个答案: