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antoniomaria/Splitter.java

Created January 25, 2016 08:28
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Java split bytes array into chunks
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Splitter.java
byte[] data = { 2, 3, 5, 7, 8, 9, 11, 12, 13 };
int blockSize = 3;
int blockCount = (data.length + blockSize - 1) / blockSize;
byte[] range = null;
for (int i = 1; i < blockCount; i++) {
int idx = (i - 1) * blockSize;
range = Arrays.copyOfRange(data, idx, idx + blockSize);
System.out.println("Chunk " + i + ": " Arrays.toString(range));
}
// Last chunk
int end = -1;
if (data.length % blockSize == 0) {
end = data.length;
} else {
end = data.length % blockSize + blockSize * (blockCount - 1);
}
range = Arrays.copyOfRange(data, (blockCount - 1) * blockSize, end);
System.out.println("Chunk " + blockCount + ": " Arrays.toString(range));
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