Question

这是我的代码：

Scanner input = new Scanner(System.in);
System.out.print("Enter a number: ");
String happyNumber = input.nextLine();

int happyNum = Integer.parseInt(happyNumber);
happyNum *= happyNum;

int answer = 0;  
for (char ch : Integer.toString(happyNum).toCharArray()) {
    int digit = ch - '0';
    answer = digit * digit;
    System.out.print(answer);
}

例如：

输入一个数字：7

输出是：   16   81

现在伙计们，我想增加16和81.总和将是97.我已经尝试过研究，但我仍然无法解决这个简单的问题。

Answer 1

使用金额来跟踪总数=）

Scanner input = new Scanner(System.in);
System.out.print("Enter a number: ");
String happyNumber = input.nextLine();

int happyNum = Integer.parseInt(happyNumber);
happyNum *= happyNum;


int answer = 0;
int sum = 0; //NEW
for (char ch : Integer.toString(happyNum).toCharArray()) {
    int digit = ch - '0';
    answer = digit * digit;
    sum = sum + answer;//NEW
    System.out.print(answer);

}
System.out.print("Sum: " + sum);//NEW

尝试并理解代码的更改。我添加// NEW添加到我添加的每一行

Java - 如何添加分隔数字

1 个答案: