iterate over key-value pairs in the object in sorted order

iterate over key-value pairs in the object in sorted order

References

Reference NO 1

http://stackoverflow.com/questions/15189189/iterate-over-key-value-pairs-in-the-object-in-sorted-order

Reference NO 2

http://stackoverflow.com/questions/12559282/javascript-object-that-maps-keys-to-value-allows-iteration-over-keys

Reference NO 3

http://underscorejs.org/

Reference NO 4

http://javascript.info/tutorial/objects

Reference NO 5

https://github.com/mbostock/d3/wiki/Arrays

Reference NO 6

http://book.mixu.net/ch5.html

Reference NO 7

http://docs.python.org/tutorial/datastructures.html

Reference NO 8

http://zetcode.com/lang/python/dictionaries/