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package com.google.common.primitives;
import com.google.common.base.Preconditions;
import java.util.Arrays;
import java.util.Comparator;
@ElementTypesAreNonnullByDefault
public final class SignedBytes {
public static final byte MAX_POWER_OF_TWO = 64;
public static int compare(byte b, byte b2) {
return b - b2;
}
public static byte saturatedCast(long j) {
if (j > 127) {
return Byte.MAX_VALUE;
}
if (j < -128) {
return Byte.MIN_VALUE;
}
return (byte) ((int) j);
}
private SignedBytes() {
}
public static byte checkedCast(long j) {
byte b = (byte) ((int) j);
Preconditions.checkArgument(((long) b) == j, "Out of range: %s", j);
return b;
}
public static byte min(byte... bArr) {
Preconditions.checkArgument(bArr.length > 0);
byte b = bArr[0];
for (int i = 1; i < bArr.length; i++) {
if (bArr[i] < b) {
b = bArr[i];
}
}
return b;
}
public static byte max(byte... bArr) {
Preconditions.checkArgument(bArr.length > 0);
byte b = bArr[0];
for (int i = 1; i < bArr.length; i++) {
if (bArr[i] > b) {
b = bArr[i];
}
}
return b;
}
public static String join(String str, byte... bArr) {
Preconditions.checkNotNull(str);
if (bArr.length == 0) {
return "";
}
StringBuilder sb = new StringBuilder(bArr.length * 5);
sb.append(bArr[0]);
for (int i = 1; i < bArr.length; i++) {
sb.append(str);
sb.append(bArr[i]);
}
return sb.toString();
}
public static Comparator<byte[]> lexicographicalComparator() {
return LexicographicalComparator.INSTANCE;
}
private enum LexicographicalComparator implements Comparator<byte[]> {
INSTANCE;
public String toString() {
return "SignedBytes.lexicographicalComparator()";
}
public int compare(byte[] bArr, byte[] bArr2) {
int min = Math.min(bArr.length, bArr2.length);
for (int i = 0; i < min; i++) {
int compare = SignedBytes.compare(bArr[i], bArr2[i]);
if (compare != 0) {
return compare;
}
}
return bArr.length - bArr2.length;
}
}
public static void sortDescending(byte[] bArr) {
Preconditions.checkNotNull(bArr);
sortDescending(bArr, 0, bArr.length);
}
public static void sortDescending(byte[] bArr, int i, int i2) {
Preconditions.checkNotNull(bArr);
Preconditions.checkPositionIndexes(i, i2, bArr.length);
Arrays.sort(bArr, i, i2);
Bytes.reverse(bArr, i, i2);
}
}
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