Java Utililty Methods Hash Code Calculate

List of utility methods to do Hash Code Calculate

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Description

The list of methods to do Hash Code Calculate are organized into topic(s).

Method

inthashCode(char[] array)
hash Code 
int h = 0;
int len = array.length;
for (int i = 0; i < len; i++) {
    h = 31 * h + array[i];
return (h);
inthashCode(char[] array, int start, int end)
Returns hash of chars in range start (inclusive) to end (inclusive) 
int code = 0;
for (int i = end - 1; i >= start; i--) {
    code = code * 31 + array[i];
return code;
inthashCode(char[] array, int start, int end)
Returns hash of chars in range start (inclusive) to end (inclusive) 
int code = 0;
for (int i = end - 1; i >= start; i--)
    code = code * 31 + array[i];
return code;
inthashCode(CharSequence seq)
hash Code 
final int prime = 31;
int result = 1;
for (int i = 0, len = seq.length(); i < len; i++) {
    result = prime * result + seq.charAt(i);
return result;
inthashCode(double dbl)
Return the same value as Double#hashCode() . 
long bits = Double.doubleToLongBits(dbl);
return hashCode(bits);
inthashCode(double v)
Computes the hash code of a double value. 
long bits = Double.doubleToLongBits(v);
return hashCode(bits);
inthashCode(double val)
Returns a hash code for the specified double value. 
return hashCode(Double.doubleToLongBits(val));
inthashCode(final byte[] data)
hash Code 
if (data == null)
    return Integer.MIN_VALUE;
final int prime = 0x01000193;
int hash = 0x811c9dc5;
for (int i = data.length - 1; i >= 0; i--) {
    hash = (hash ^ data[i]) * prime;
return hash;
...
inthashCode(final char[] text, final int textOffset, final int textLen)
hash Code 
int h = 0;
int off = textOffset;
for (int i = 0; i < textLen; i++) {
    h = 31 * h + text[off++];
return h;
inthashCode(final int i)
Provides a hash code based on the given integer value. 
return i;