final HashSet<T> seen = new HashSet<T>();
final Iterator<T> listIt = x.iterator();
while (listIt.hasNext()) {
final T curr = listIt.next();
if (seen.contains(curr)) {
listIt.remove();
} else {
seen.add(curr);
}
}
y := make(map[T]struct{}, len(x))
for _, v := range x {
y[v] = struct{}{}
}
x2 := make([]T, 0, len(y))
for _, v := range x {
if _, ok := y[v]; ok {
x2 = append(x2, v)
delete(y, v)
}
}
x = x2
seen := make(map[T]bool)
j := 0
for _, v := range x {
if !seen[v] {
x[j] = v
j++
seen[v] = true
}
}
for i := j; i < len(x); i++ {
x[i] = nil
}
x = x[:j]
final HashSet<T> seen = new HashSet<T>();
final Iterator<T> listIt = x.iterator();
while (listIt.hasNext()) {
final T curr = listIt.next();
if (seen.contains(curr)) {
listIt.remove();
} else {
seen.add(curr);
}
}
y := make(map[T]struct{}, len(x))
for _, v := range x {
y[v] = struct{}{}
}
x2 := make([]T, 0, len(y))
for _, v := range x {
if _, ok := y[v]; ok {
x2 = append(x2, v)
delete(y, v)
}
}
x = x2
seen := make(map[T]bool)
j := 0
for _, v := range x {
if !seen[v] {
x[j] = v
j++
seen[v] = true
}
}
for i := j; i < len(x); i++ {
x[i] = nil
}
x = x[:j]