12. Implement conversion from decimal to N in Java recursion-negative numbers are not considered

/*** Call basestring recursively * @ Param num in decimal number * @ Param base the number of hexadecimal numbers to be converted */public static string basestring (INT num, int Base) {string STR = "", digit = "0123456789 abcdef"; if (num = 0) {return "" ;}else {STR = basestring (Num/base, base ); return STR + digit. charat (Num % base );}}

The preceding method recursively converts decimal to n.

2. Non-recursion

Public class transtobinary {public static void main (string [] ARGs) {int number = 123; string a = translate (number); system. out. println (a);} public static string translate (INT num) {stringbuffer binary = new stringbuffer (); While (num! = 0 & num! = 1) {binary. insert (0, num % 2); num = num/2; If (num = 0 | num = 1) {binary. insert (0, num % 2);} return binary. tostring ();}}

Output result: 1111011