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Copy pathDecimalToBinary.java
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49 lines (41 loc) · 1.05 KB
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Copy pathDecimalToBinary.java
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49 lines (41 loc) · 1.05 KB
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/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static String convertToBinaryBitManip(int num){
StringBuilder sbr = new StringBuilder();
while(num != 0){
int shifted = num & 1;
char c = shifted == 0? '0' : '1';
sbr.insert(0,c);
num = num >> 1;
}
return sbr.toString();
}
public static String convertToBinaryIter(int num){
StringBuilder sbr = new StringBuilder();
while(num != 0){
char c = num%2 == 0? '0' : '1';
sbr.insert(0,c);
num = num/2;
}
return sbr.toString();
}
public static StringBuilder convertToBinaryRecur(int num){
StringBuilder sbr = new StringBuilder();
if(num == 0)
return sbr;
char c = num%2 == 0? '0' : '1';
sbr = convertToBinaryRecur(num/2);
sbr.append(c);
return sbr;
}
public static void main (String[] args) throws java.lang.Exception
{
int num = 13;
System.out.println(convertToBinaryRecur(13).toString());
}
}