随便写了个递归的,循环用while就可以了,看看吧,太晚了..... public class Test1 { public static void main(String[] args){ int j = 1; Test1 sbt = new Test1(); String res = sbt.getDec(j,""); System.out.println(res); } public String getDec(int a,String b) {
if((a!=1)&&(a!=0)) { a = a/2; b = new Integer(a%2).toString()+ b; return getDec(a,b); } else if ((a==1)||(a==0)) return new Integer(a).toString(); else return b; } }
public class A { public static void printBinary(int num) { StringBuffer buffer = new StringBuffer(); int mod = 0; do { mod = num % 2; num = num / 2; buffer.insert(0, mod + ""); // 因为是倒着来的,所以插入第一个字符前面. } while (num != 0); System.out.println(buffer.toString()); }
public static void printInverseNumber(int num) { int last = 0;
do { last = num % 10; num = num / 10; System.out.print(last); } while (num != 0); }
public static void main(String[] args) { A.printBinary(10); A.printInverseNumber(12345); } }
public class Test1 {
public static void main(String[] args){
int j = 1;
Test1 sbt = new Test1();
String res = sbt.getDec(j,"");
System.out.println(res);
} public String getDec(int a,String b)
{
if((a!=1)&&(a!=0))
{
a = a/2;
b = new Integer(a%2).toString()+ b;
return getDec(a,b);
}
else if ((a==1)||(a==0))
return new Integer(a).toString();
else
return b;
}
}
public class A {
public static void printBinary(int num) {
StringBuffer buffer = new StringBuffer();
int mod = 0;
do {
mod = num % 2;
num = num / 2;
buffer.insert(0, mod + ""); // 因为是倒着来的,所以插入第一个字符前面.
} while (num != 0);
System.out.println(buffer.toString());
}
public static void printInverseNumber(int num) {
int last = 0;
do {
last = num % 10;
num = num / 10;
System.out.print(last);
} while (num != 0);
}
public static void main(String[] args) {
A.printBinary(10);
A.printInverseNumber(12345);
}
}