## Tags » Iterator

#### Binary Search Tree Iterator

Given a binary search tree, implements an iterator that supports next() and hasNext().

# Iterative In-order Traversal

Borrow idea from iterative in-order traversal. Maintaining a stack. 106 more words

#### Breaking the LOOP Exercise JS

Hey! you know that saying “slow down to speed up”? that’s what i intend to do. Instead of checking out multiple topics without internalize them properly because i’m in a “rush” to finish and feel that I’m progressing. 1,832 more words

#### JavaScript Loops

This Lesson was extracted from Codecademy  website.

# Loops

One of a computer’s greatest abilities is to repeat a task multiple times. Loops let us tell the computer to… 2,248 more words

#### Zig Zag Iterator

Implement Zig Zag Iterator that has `hasNext()` and `next()` methods that can print values from a list of lists in cyclic order.

# Array of Index Solution… 225 more words

## Iterator

An Iterator is an interface which allows iterating over collection
It provides hasNext() and next() methods to iterate as shown below –

```Iterator lists= Arrays.asList("A","B","C").iterator();
while(lists.hasNext()) {
System.out.println(lists.next());
}
… 140 more words```
Java

#### Java - Convert Iterator to Stream

Use Spliterators.spliterator() or Spliterators.spliteratorUnknownSize() to convert an iterator to a stream

``````

package com.pwn.stream;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;

public class IteratorToStream {

public static void main(String[] args) {

Iterator<String> iterator = Arrays.asList("A", "B", "C")
.iterator();
Spliterator<String> spliterator = Spliterators
.spliteratorUnknownSize(iterator, 0);
Stream<String> stream = StreamSupport.stream(spliterator,
false);
stream.forEach(System.out::println);

}
}

A
B
C

``````
Java

#### Using Cursors with MyBatis

There are queries that you shouldn’t map as `List<T>`.

And the `Cursor` comes to play.

```@Service
public class SomeService {

public Cursor<Some> getCursor(...) {
// returns the cursor? 170 more words```
Programming