提示用户重新输入整数，直到输入二进制数
•浏览 1
Prompting user to re-enter integers until binary number is entered
我是 JAVA 新手(顺便说一下计算机编程)。以下程序检查输入是否为二进制。它应该提示用户重新输入整数，直到输入二进制数。但是这个程序做的恰恰相反。
如果输入是二进制的，它要求我重新输入整数，并且当输入非二进制时程序终止。
我需要认真的帮助。这是我的输出
public static void main(String[] args) {
int value, userValue;
int binaryDigit = 0, notBinaryDigit = 0;
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
userValue = scan.nextInt();
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
}
}
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
int userValue = scan.nextInt();
if (isBinary(userValue)) {
System.out.println(userValue +" is a Binary Number.");
break;
} else {
System.out.println(userValue +" is a not Binary Number.");
}
}
}
public static boolean isBinary(int input) {
while (input > 0) {
if ((input % 10 != 0) && (input % 10 != 1)) {
return false;
}
input = input / 10;
}
return true;
}
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
notBinaryDigit--;
} if(binaryDigit >0 {
System.out.println(value +" is a Binary Number.");
binaryDigit--;
break;
}
public static void main(String []args){
int value, userValue=34;
int binaryDigit = 0, notBinaryDigit = 0;
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
} else {
System.out.println(value +" is a Binary Number.");
}
}答案可能为时已晚。但是如果使用该方法，代码可以大大简化。
public static void main(String[] args) {
int value, userValue;
int binaryDigit = 0, notBinaryDigit = 0;
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
userValue = scan.nextInt();
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
}
}
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
int userValue = scan.nextInt();
if (isBinary(userValue)) {
System.out.println(userValue +" is a Binary Number.");
break;
} else {
System.out.println(userValue +" is a not Binary Number.");
}
}
}
public static boolean isBinary(int input) {
while (input > 0) {
if ((input % 10 != 0) && (input % 10 != 1)) {
return false;
}
input = input / 10;
}
return true;
}
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
notBinaryDigit--;
} if(binaryDigit >0 {
System.out.println(value +" is a Binary Number.");
binaryDigit--;
break;
}
public static void main(String []args){
int value, userValue=34;
int binaryDigit = 0, notBinaryDigit = 0;
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
} else {
System.out.println(value +" is a Binary Number.");
}
}更改您的代码
从此
public static void main(String[] args) {
int value, userValue;
int binaryDigit = 0, notBinaryDigit = 0;
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
userValue = scan.nextInt();
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
}
}
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
int userValue = scan.nextInt();
if (isBinary(userValue)) {
System.out.println(userValue +" is a Binary Number.");
break;
} else {
System.out.println(userValue +" is a not Binary Number.");
}
}
}
public static boolean isBinary(int input) {
while (input > 0) {
if ((input % 10 != 0) && (input % 10 != 1)) {
return false;
}
input = input / 10;
}
return true;
}
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
notBinaryDigit--;
} if(binaryDigit >0 {
System.out.println(value +" is a Binary Number.");
binaryDigit--;
break;
}
public static void main(String []args){
int value, userValue=34;
int binaryDigit = 0, notBinaryDigit = 0;
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
} else {
System.out.println(value +" is a Binary Number.");
}
}到这个
public static void main(String[] args) {
int value, userValue;
int binaryDigit = 0, notBinaryDigit = 0;
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
userValue = scan.nextInt();
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
}
}
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
int userValue = scan.nextInt();
if (isBinary(userValue)) {
System.out.println(userValue +" is a Binary Number.");
break;
} else {
System.out.println(userValue +" is a not Binary Number.");
}
}
}
public static boolean isBinary(int input) {
while (input > 0) {
if ((input % 10 != 0) && (input % 10 != 1)) {
return false;
}
input = input / 10;
}
return true;
}
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
notBinaryDigit--;
} if(binaryDigit >0 {
System.out.println(value +" is a Binary Number.");
binaryDigit--;
break;
}
public static void main(String []args){
int value, userValue=34;
int binaryDigit = 0, notBinaryDigit = 0;
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
} else {
System.out.println(value +" is a Binary Number.");
}
}它会询问值并判断它是否是二进制的，如果是二进制则终止
由于 Scanner 类而出现错误。
您可以运行您的程序并通过像这样删除 Scanner 类来检查您的逻辑。
公共类测试{
public static void main(String[] args) {
int value, userValue;
int binaryDigit = 0, notBinaryDigit = 0;
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
userValue = scan.nextInt();
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
}
}
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while (true) {
System.out.println("Please enter positive integers:");
int userValue = scan.nextInt();
if (isBinary(userValue)) {
System.out.println(userValue +" is a Binary Number.");
break;
} else {
System.out.println(userValue +" is a not Binary Number.");
}
}
}
public static boolean isBinary(int input) {
while (input > 0) {
if ((input % 10 != 0) && (input % 10 != 1)) {
return false;
}
input = input / 10;
}
return true;
}
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
break;
} else {
System.out.println(value +" is a Binary Number.");
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
notBinaryDigit--;
} if(binaryDigit >0 {
System.out.println(value +" is a Binary Number.");
binaryDigit--;
break;
}
public static void main(String []args){
int value, userValue=34;
int binaryDigit = 0, notBinaryDigit = 0;
value = userValue;
while (userValue > 0) {
if ((userValue % 10 == 0) || (userValue % 10 == 1)) {
binaryDigit++;
} else {
notBinaryDigit++;
}
userValue = userValue / 10;
}
if (notBinaryDigit > 0) {
System.out.println(value +" is a not a Binary Number.");
} else {
System.out.println(value +" is a Binary Number.");
}
}}