This is a Java Program to implement Bit Set. Bit Set is an array data structure used to implement a simple set data structure.
Here is the source code of the Java Program to implement Bit Set. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.
/** ** Java Program to implement Bit Set **/ import java.util.Scanner; /** class bit set */ class BitSet { private byte[] bits; private int bitSetSize; /** constructor **/ public BitSet(int size) { bitSetSize = size; bits = new byte[1 + size/8]; } /** constructor **/ public BitSet(BitSet bs) { bitSetSize = bs.bitSetSize; bits = new byte[bs.bits.length]; System.arraycopy(bs.bits, 0, bits, 0, bs.bits.length); } /** function to clear all bits **/ public void clear() { bits = new byte[bits.length]; } /** function setBit - bit to be set **/ public void setBit(int n) { bits[n / 8] |= (1 << (n % 8)); } /** function getBit **/ public boolean getBit(int n) { return ((bits[n / 8] & (1 << (n % 8))) != 0); } /** function clearBit **/ public void clearBit(int n) { bits[n / 8] &= ((1 << (n % 8)) ^ ((1 << 8) - 1)); } /** function for or **/ public void or(BitSet set) { for (int i = 0; i < bits.length; i++) { if (i < set.bits.length) bits[i] |= set.bits[i]; else break; } } /** function for and **/ public void and(BitSet set) { for (int i = 0; i < bits.length; i++) { if (i < set.bits.length) bits[i] &= set.bits[i]; else bits[i] = 0; } } /** function to display bitset */ public void display() { System.out.print("\nBit Set : "); for (int i = 0; i < bitSetSize; i++) if (getBit(i)) System.out.print(i +" "); System.out.println(); } } /** Class BitSetTest **/ public class BitSetTest { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Bit Set Test\n"); System.out.println("Enter max size of Bit Set 1"); BitSet bs1 = new BitSet(scan.nextInt() ); char ch; /* Perform bitset operations */ do { System.out.println("\nBit Set Operations\n"); System.out.println("1. set bit"); System.out.println("2. get bit"); System.out.println("3. clear bit"); System.out.println("4. clear"); int choice = scan.nextInt(); switch (choice) { case 1 : System.out.println("Enter integer element to set"); bs1.setBit(scan.nextInt() ); break; case 2 : System.out.println("Enter integer element to get status"); System.out.println("Bit Status : "+ bs1.getBit(scan.nextInt() )); break; case 3 : System.out.println("Enter integer element to clear"); bs1.clearBit(scan.nextInt() ); break; case 4 : System.out.println("Bit Set Cleared"); bs1.clear(); break; default : System.out.println("Wrong Entry \n "); break; } bs1.display(); System.out.println("\nDo you want to continue (Type y or n) \n"); ch = scan.next().charAt(0); } while (ch == 'Y'|| ch == 'y'); System.out.println("\n\nEnter max size of Bit Set 2"); BitSet bs2 = new BitSet(scan.nextInt() ); /* Perform bitset operations */ do { System.out.println("\nBit Set Operations\n"); System.out.println("1. set bit"); System.out.println("2. get bit"); System.out.println("3. clear bit"); System.out.println("4. clear"); int choice = scan.nextInt(); switch (choice) { case 1 : System.out.println("Enter integer element to set"); bs2.setBit(scan.nextInt() ); break; case 2 : System.out.println("Enter integer element to get status"); System.out.println("Bit Status : "+ bs2.getBit(scan.nextInt() )); break; case 3 : System.out.println("Enter integer element to clear"); bs2.clearBit(scan.nextInt() ); break; case 4 : System.out.println("Bit Set Cleared"); bs2.clear(); break; default : System.out.println("Wrong Entry \n "); break; } bs2.display(); System.out.println("\nDo you want to continue (Type y or n) \n"); ch = scan.next().charAt(0); } while (ch == 'Y'|| ch == 'y'); BitSet temp = new BitSet(bs1); temp.or(bs2); System.out.println("\n\nBitSet1 OR BitSet2"); temp.display(); temp = new BitSet(bs1); temp.and(bs2); System.out.println("\nBitSet1 AND BitSet2"); temp.display(); } }
Bit Set Test Enter max size of Bit Set 1 50 Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 24 Bit Set : 24 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 6 Bit Set : 6 24 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 28 Bit Set : 6 24 28 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 5 Bit Set : 5 6 24 28 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 14 Bit Set : 5 6 14 24 28 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 2 Enter integer element to get status 14 Bit Status : true Bit Set : 5 6 14 24 28 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 3 Enter integer element to clear 14 Bit Set : 5 6 24 28 Do you want to continue (Type y or n) n Enter max size of Bit Set 2 50 Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 14 Bit Set : 14 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 7 Bit Set : 7 14 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 1 Bit Set : 1 7 14 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 28 Bit Set : 1 7 14 28 Do you want to continue (Type y or n) y Bit Set Operations 1. set bit 2. get bit 3. clear bit 4. clear 1 Enter integer element to set 5 Bit Set : 1 5 7 14 28 Do you want to continue (Type y or n) n BitSet1 OR BitSet2 Bit Set : 1 5 6 7 14 24 28 BitSet1 AND BitSet2 Bit Set : 5 28
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