Android 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

inthashBitmap(Bitmap bitmap)
hash Bitmap 
int hash_result = 0;
int w = bitmap.getWidth();
int h = bitmap.getHeight();
hash_result = (hash_result << 7) ^ h;
hash_result = (hash_result << 7) ^ w;
for (int pixel = 0; pixel < 20; ++pixel) {
    int x = (pixel * 50) % w;
    int y = (pixel * 100) % h;
...
inthashCode(T a)
hash Code 
return (a == null) ? 0 : a.hashCode();
inthashCode(T a, T b)
hash Code 
int h = hashCode(a);
int x = (b == null) ? 0 : b.hashCode();
h = ((h << 5) - h) ^ x; 
return h;
inthashCode(T a, T b, T c)
hash Code 
int h = hashCode(a, b);
int x = (c == null) ? 0 : c.hashCode();
h = ((h << 5) - h) ^ x; 
return h;
inthashCode(T a, T b, T c, T d)
hash Code 
int h = hashCode(a, b, c);
int x = (d == null) ? 0 : d.hashCode();
h = ((h << 5) - h) ^ x; 
return h;
inthashCode(T[] array)
Hash every element uniformly using the Modified Bernstein hash. 
if (array == null) {
    return 0;
int h = 1;
for (T o : array) {
    int x = (o == null) ? 0 : o.hashCode();
    h = ((h << 5) - h) ^ x; 
return h;
inthashCode(float[] array)
Hash every element uniformly using the Modified Bernstein hash. 
if (array == null) {
    return 0;
int h = 1;
for (float f : array) {
    int x = Float.floatToIntBits(f);
    h = ((h << 5) - h) ^ x; 
return h;
inthashCode(int x)
hash Code 
return hashCode(new int[] { x });
inthashCode(int x, int y)
hash Code 
return hashCode(new int[] { x, y });
inthashCode(int x, int y, int z)
hash Code 
return hashCode(new int[] { x, y, z });