java查表法_Java查表法进制转换

public static void main(String[] args)

{

toBin_1(6);

toBin(60);

}

//十进制转换为二进制

public static void toBin_1(int num)

{

//定义二进制表

char[] chs={'0','1'};

//定义临时存储容器

char[] arr = new char[32];

int pos = arr.length;

while(num!=0)

{

int temp = num & 1;

arr[--pos] = chs[temp];

num =num >>>1;

}

for(int i=pos;i

{

System.out.print(arr[i]+",");

}

}

//十进制转换为十六进制

public static void toBin(int num)

{

char[] arr = new char[8];

char[] chs = { '0','1','2','3',

'4','5','6','7',

'8','9','A','B',

'C','D','E','F'};

int pos = arr.length-1;

while(num!=0)

{

int temp=num&15;

arr[pos--]=chs[temp];

num= num>>>4;

}

for(int i=pos+1;i

{

System.out.print(arr[i]+",");

}

}

****************************

完善:

public static void main(String[] args)

{

toBin(6);

toB(60);

toHex(60);

}

//十进制转换二进制

public static void toBin(int num)

{

System.out.print(num+"转化为二进制位:");

trans(num,1,1);

System.out.println();

}

//十进制转换八进制

public static void toB(int num)

{

System.out.print(num+"转化为八进制位:");

trans(num,7,3);

System.out.println();

}

//十进制转换十六进制

public static void toHex(int num)

{

System.out.print(num+"转化为十六进制位:");

trans(num,15,4);

System.out.println();

}

public static void trans(int num,int base,int offset)

{

char[] chs = { '0','1','2','3',

'4','5','6','7',

'8','9','A','B',

'C','D','E','F'};

char[] arr = new char[32];

int pos = arr.length;

while(num!=0)

{

int temp = num & base;

arr[--pos] = chs[temp];

num = num >>>offset;

}

for(int x=pos; x

{

System.out.print(arr[x]);

}

}


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