本文整理了Java中java.math.BigInteger.flipBit()
方法的一些代码示例,展示了BigInteger.flipBit()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。BigInteger.flipBit()
方法的具体详情如下:
包路径:java.math.BigInteger
类名称:BigInteger
方法名:flipBit
[英]Returns a BigInteger which has the same binary representation as this but with the bit at position n flipped. The result is equivalent to this ^ pow(2, n).
Implementation Note: Usage of this method is not recommended as the current implementation is not efficient.
[中]返回一个BigInteger,它具有与此相同的二进制表示形式,但位在位置n处翻转。结果与这个^pow(2,n)等价。
实施说明:不建议使用此方法,因为当前的实施效率不高。
代码示例来源:origin: spring-projects/spring-batch
private void updateTokenizerValidation(Object tokenizer, int index) {
if(tokenizer != null) {
this.tokenizerValidator = this.tokenizerValidator.flipBit(index);
}
else {
this.tokenizerValidator = this.tokenizerValidator.clearBit(index);
}
}
代码示例来源:origin: org.apache.commons/commons-math3
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: hcoles/pitest
@Override
BigInteger apply(BigInteger left, BigInteger right) {
return left.flipBit(right.intValue());
}
}
代码示例来源:origin: com.expedia.tesla/tesla-core
public static BigInteger toUInt64(long value) {
long lower63 = value & 0x7FFFFFFFFFFFFFFFL;
assert (lower63 >= 0);
BigInteger v = BigInteger.valueOf(lower63);
if ((value & 0x8000000000000000L) != 0L) {
return v.flipBit(63);
}
return v;
}
}
代码示例来源:origin: stackoverflow.com
// create 2 BigInteger objects
BigInteger bi1, bi2;
// assign value to bi1
bi1 = new BigInteger("8");//1000
// perform flipbit operation on bi1 with index 1
bi2 = bi1.flipBit(1);
代码示例来源:origin: stackoverflow.com
// 2⁶⁴
private static BigInteger twoP64=BigInteger.ZERO.flipBit(64);
public static BigInteger getNumBytes()
{
long longValue=getNumByteNative();
BigInteger i=BigInteger.valueOf(longValue);
if(longValue<0) i=i.add(twoP64);
return i;
}
private native long getNumByteNative();
代码示例来源:origin: apache/servicemix-bundles
private void updateTokenizerValidation(Object tokenizer, int index) {
if(tokenizer != null) {
this.tokenizerValidator = this.tokenizerValidator.flipBit(index);
}
else {
this.tokenizerValidator = this.tokenizerValidator.clearBit(index);
}
}
代码示例来源:origin: stackoverflow.com
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(2048);
KeyPair keyPair = keyPairGenerator.generateKeyPair();
RSAPrivateKey rsaPrivateKey = (RSAPrivateKey) keyPair.getPrivate();
BigInteger d = rsaPrivateKey.getPrivateExponent();
// Flip some bits in d
BigInteger newD = d.flipBit(29);
// Make a new RSA private key with the modified private exponent
RSAPrivateKeySpec newRSAPrivateSpec = new RSAPrivateKeySpec(rsaPrivateKey.getModulus(), newD);
KeyFactory kf = KeyFactory.getInstance("RSA");
RSAPrivateKey newPrivateKey = (RSAPrivateKey) kf.generatePrivate(newRSAPrivateSpec);
代码示例来源:origin: stackoverflow.com
public static void main(String[] args) {
int x = 2;
int n = 4;
Set<BigInteger> result = new LinkedHashSet<>();
for (int j = x; j > 0; j--) {
Set<BigInteger> a = new LinkedHashSet<>();
for (int i = 0; i < n - j + 1; i++) {
if (j == x) {
a.add(BigInteger.ZERO.flipBit(i));
} else {
for (BigInteger num : result) {
if (num != null && !num.testBit(i) && (i >= (n - j) || num.getLowestSetBit() >= i-1))
a.add(num.setBit(i));
}
}
}
result = a;
}
String zeros = new String(new char[n]).replace("\0", "0");
for (BigInteger i : result) {
String binary = i.toString(2);
System.out.println(zeros.substring(0, n - binary.length()) + binary);
}
}
代码示例来源:origin: org.apache.commons/commons-math
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: geogebra/geogebra
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: io.virtdata/virtdata-lib-realer
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: org.apache.commons/math
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: harbby/presto-connectors
denominator = BigInteger.ZERO.flipBit(-k);
} else {
numerator = BigInteger.valueOf(m).multiply(BigInteger.ZERO.flipBit(k));
denominator = BigInteger.ONE;
代码示例来源:origin: telehash/telehash-java
/**
* Return a random hashname located with the specified bucket
* (relative to the provided origin hashname).
*
* @param originHashName The origin hashname. (i.e., your own hashname.)
* @param bucket The bucket index.
* @return The random hashname within the bucket.
*/
public static HashName getRandomHashName(HashName originHashName, int bucket) {
// start with the origin hashname
BigInteger hash = new BigInteger(1, originHashName.getBytes());
// randomize all bits below the bucket bit
if (bucket > 0) {
byte[] randomBytes = Telehash.get().getCrypto().getRandomBytes(HashName.SIZE);
BigInteger random = new BigInteger(1, randomBytes);
BigInteger mask = BigInteger.ONE.shiftLeft(bucket).subtract(BigInteger.ONE);
hash = hash.andNot(mask); // chop off right part of origin
random = random.and(mask); // chop off left part of random
hash = hash.or(random); // combine left-origin and right-random
}
// flip the bucket bit
hash = hash.flipBit(bucket);
// the byte array may have an extra leading byte to hold the sign bit,
// so trim to size.
byte[] randomHashNameBytes = Util.fixedSizeBytes(hash.toByteArray(), HashName.SIZE);
return new HashName(randomHashNameBytes);
}
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