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[英]In Java, can I use DecimalFormat to enter a dash (-) between numbers?
[英]How can I print numbers between two numbers that I enter?
我正在創建一個程序,要求用戶輸入兩個數字。 然后它將按數字順序打印用戶輸入的數字和兩個數字之間的數字。 我聲明並初始化了兩個變量,分別是“number1”和“number2”。
int number1;
int number2;
do{
Scanner input = new Scanner(System.in);
System.out.print("Enter the first number: " );
number1 = input.nextInt();
System.out.print("Enter the second number: " );
number2 = input.nextInt();
if(number1 == number2)
{
System.out.println("The numbers you entered equal with each other. Try again.\n");
}
}while(number1 == number2);
if (number1 > number2)
{
for(int a = number2; a <= number1; a++)
{
System.out.print(a + " ");
}
}
else
{
for(int a = number1; a <= number2; a++)
{
System.out.print(a + " ");
}
}
我如何使它也只打印“number1”和“number2”之間的數字?
你的代碼的第一部分很好,如果你想這樣做的話。
Scanner scanner = new Scanner(System.in);
int first, second;
do {
System.out.print("Enter the first number: ");
first = scanner.nextInt();
System.out.print("Enter the second number: ");
second = scanner.nextInt();
if (first == second) {
System.out.println("The numbers you entered equal with each other. Try again.\n");
}
} while (first == second);
對於第二部分,我建議確定哪個數字是哪個(較小/較大)而不是使用重復代碼。 此外,您只需要在您選擇的數字之間循環數字,因此您必須更改 for 循環
//determine which number is bigger/smaller
int smaller = Math.min(first, second);
int bigger = Math.max(first, second);
for(int i = smaller+1 ; i < bigger ; i++){
System.out.print(i + " ");
}
這里唯一奇怪的情況是您輸入兩個相鄰的數字,這將不會輸出任何數字。 例如3和4。
int max = Math.max(number1, number2); for(int i = (max == number1 ? number2 : number1) + 1 ; i < max ; i++) { System.out.println(i); }
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