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Convertion.java
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47 lines (44 loc) · 1.33 KB
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class Convertion{
public static void main(String[] args){
int num = -1;
System.out.println(num+"");
System.out.println(toHex(num)+"");
System.out.println(Integer.toString(num,16));
System.out.println(Integer.toHexString(num));
System.out.println(Integer.toOctalString(num));
System.out.println(toOctal(num));
System.out.println(Integer.toBinaryString(num));
System.out.println(toBinary(num)+"");
//return Integer.toString(num, 7);
}
public static String toHex(int num) {
char[] map = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
if(num == 0) return "0";
String result = "";
while(num != 0){
result = map[(num & 15)] + result;
num = (num >>> 4);
}
return result;
}
public static String toBinary(int num) {
char[] map = {'0','1'};
if(num == 0) return "0";
String result = "";
while(num != 0){
result = map[(num & 1)] + result;
num = (num >>> 1);
}
return result;
}
public static String toOctal(int num) {
char[] map = {'0','1','2','3','4','5','6','7'};
if(num == 0) return "0";
String result = "";
while(num != 0){
result = map[(num & 7)] + result;
num = (num >>> 3);
}
return result;
}
}