Prerequisite: BigInteger Basics
The clearBit() method returns a BigInteger which is used to clear a particular bit position in a BigInteger. The bit at index n of binary representation of BigInteger will be cleared means converted to zero. Mathematically we can say that it is used to calculate this & ~(1<<n).
Syntax:
public BigInteger clearBit(int n)
Parameter: The method takes one parameter n which refers to the index of the bit needed to be cleared.
Return Value: The method returns the BigInteger after clearing the bit position n.
Throws: The method might throw an ArithmeticException when n is negative.
Examples:
Input: value = 2300, index = 3 Output: 2292 Explanation: Binary Representation of 2300 = 100011111100 bit at index 3 is 1 so clear the bit at index 3 Now Binary Representation becomes 100011110100 and Decimal equivalent of 100011110100 is 2292 Input: value = 5482549, index = 0 Output: 5482548
Below program illustrate the clearBit(index) method of BigInteger().
Java
/**Program Demonstrate clearBit() method of BigInteger*/import java.math.*;public class GFG { public static void main(String[] args) { // Creating BigInteger object BigInteger biginteger = new BigInteger("5482549"); // Creating an int i for index int i = 0; // Call clearBit() method on bigInteger at index i // store the return BigInteger BigInteger changedvalue = biginteger.clearBit(i); String result = "After applying clearbit at index " + i + " of " + biginteger+" New Value is " + changedvalue; // Print result System.out.println(result); }} |
Output:
After applying clearbit at index 0 of 5482549 New Value is 5482548
Reference:https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html#clearBit(int)
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