Reverse the contents of array using Java, Groovy, JavaScript and Dart

DReverseArrayTest.dart

// To live run use online dart console from here http://try.dartlang.org/

List<int> reverseArray0(List<int> items) {
  List<int> ritems = new List<int>();
  ritems.addAll(items.reversed);
  return ritems;
}

List<int> reverseArray1(List<int> items) {
  List<int> ritems = new List<int>(items.length);
  for(int i = items.length-1, j = 0; i >= 0; i--, j++) {
    ritems[j] = items[i];
  }
  return ritems;
}

void reverseArray2(List<int> items) {
  int e = items.length ~/ 2;
  for(int i = 0, j = items.length-1; i < e; i++, j--) {
    int t = items[i];
    items[i] = items[j];
    items[j] = t;
  }
}

void reverseArray3(List<int> items) {
  reverseArray33(items, 0, items.length-1);
}

void reverseArray33(List<int> items, int i , int j) {
  if(i < j) {
    int t = items[i];
    items[i] = items[j];
    items[j] = t;
    reverseArray33(items, ++i, --j);
  }
}

void main() {
  var items = <int>[0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
  print("Given Items = $items");

  items = reverseArray0(items);
  print("Reverse Version 0 : $items");

  items = reverseArray1(items);
  print("Reverse Version 1 : $items");

  reverseArray2(items);
  print("Reverse Version 2 : $items");

  reverseArray3(items);
  print("Reverse Version 3 : $items");
}

GReverseArrayTest.groovy

// To live run use online groovy console from here http://groovyconsole.appspot.com/

def reverseArray0 = { def items ->
	return items.reverse(false)
}

def reverseArray1 = { def items ->
	def nItems = [];
	int j = items.size()-1;
	for(int i = 0; i < items.size(); i++) {
		nItems[i] = items[j--];
	}
	return nItems;
}

def reverseArray2 = { def items ->
	int j = items.size() - 1;
	int e = items.size() / 2;
	for(int i = 0; i < e; i++) {
		def t = items[i];
		items[i] = items[j];
		items[j--] = t;
	}
}

def reverseArray33 = {}
reverseArray33 = { def items, def i, def j ->
	if(i < j) {
		def t = items[i]
		items[i] = items[j]
		items[j] = t;
		reverseArray33(items, ++i, --j)
	}
}

def reverseArray3 = { def items ->
	reverseArray33(items, 0, items.size() - 1)
}

def items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
println "Given Items = $items";

items = reverseArray0(items);
println "Reverse Version 0 : $items"

items = reverseArray1(items);
println "Reverse Version 1 : $items"

reverseArray2(items);
println "Reverse Version 2 : $items";

reverseArray3(items);
println "Reverse Version 2 : $items";

JReverseArrayTest.java

public class JReverseArrayTest {

	static int[] reverseArray0(int[] items) {
		// yet to figure out sdk library's method to reverse array items
		return items;
	}

	static int[] reverseArray1(int[] items) {
		int[] nItems = new int[items.length];
		for (int i = 0, j = nItems.length - 1; i < items.length; i++, j--) {
			nItems[i] = items[j];
		}
		return nItems;
	}

	static void reverseArray2(int[] items) {
		int e = items.length / 2;
		for (int i = 0, j = items.length - 1; i < e; i++, j--) {
			int t = items[i];
			items[i] = items[j];
			items[j] = t;
		}
	}

	static void reverseArray3(int[] items) {
		reverseArray3(items, 0, items.length - 1);
	}

	private static void reverseArray3(int[] items, int i, int j) {
		if (i < j) {
			int t = items[i];
			items[i] = items[j];
			items[j] = t;
			reverseArray3(items, ++i, --j);
		}
	}

	static String toPrintString(int[] items) {
		StringBuilder sb = new StringBuilder("[");
		for (int i = 0; i < items.length; i++) {
			sb.append(items[i] + ",");
		}
		sb.append("]");
		return sb.toString();
	}

	public static void main(String args[]) {
		int items[] = { 1, 2, 3, 4, 5, 6, 7 };
		System.out.println("Given Items = " + toPrintString(items));

		System.out.println("Reverse Version 0 : "
				+ toPrintString(reverseArray0(items)));

		System.out.println("Reverse Version 1 : "
				+ toPrintString(reverseArray1(items)));

		reverseArray2(items);
		System.out.println("Reverse Version 2 : " + toPrintString(items));

		reverseArray3(items);
		System.out.println("Reverse Version 3 : " + toPrintString(items));
	}
}

JSReverseArrayTest.js

// To live run use online java script console from here http://repl.it/

// Uncomment below commented block if you are going to run in browser
/*
 var println = function(message) {
 console.log(message);
 };
 */
// Comment the above commented block if you are going to run in Eclipse
var reverseArray0 = function(items) {
	return items.reverse();
};

var reverseArray1 = function(items) {
	var nItems = [], j = items.length - 1;
	for ( var i = 0; i < items.length; i++) {
		nItems[i] = items[j--];
	}
	return nItems;
};

var reverseArray2 = function(items) {
	var e = Math.ceil(items.length / 2);
	for ( var i = 0, j = items.length - 1; i < e; i++, j--) {
		var t = items[i];
		items[i] = items[j];
		items[j] = t;
	}
};

var reverseArray3 = function(items) {
	reverseArray33(items, 0, items.length - 1);
};

var reverseArray33 = function(items, i, j) {
	if (i < j) {
		var t = items[i];
		items[i] = items[j];
		items[j] = t;
		reverseArray33(items, ++i, --j);
	}
};

var items = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ];
println("Given Items = " + items);

items = reverseArray0(items);
println("Reverse Version 0 : " + items);

items = reverseArray1(items);
println("Reverse Version 1 : " + items);

reverseArray2(items);
println("Reverse Version 2 : " + items);

reverseArray3(items);
println("Reverse Version 3 : " + items);