Improved examples

[iamrajiv]

References to other Issues or PRs or Relevant literature

Fixes #112

Brief description of what is fixed or changed

Improved examples in PyDataStructs by changing print() to str()

Other comments

[codecov]

Codecov Report

Merging #123 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #123   +/-   ##
=========================================
  Coverage   98.019%   98.019%           
=========================================
  Files           20        20           
  Lines         1363      1363           
=========================================
  Hits          1336      1336           
  Misses          27        27

Impacted Files	Coverage Δ
...datastructs/linear_data_structures/linked_lists.py	100% <ø> (ø)	⬆️

[iamrajiv]

@czgdp1807 I have made changes to linked_list.py and other parts of the codebase is already changed like in stack.py, binary_trees.py, heaps.py, space_partitioning_trees.py and queue.py though it does not have function to return the contents of queue so what about adding function to return the contents of queue?

[czgdp1807]

so what about adding function to return the contents of queue?

Can you please elaborate on what you actually want to do?

[iamrajiv]

@czgdp1807 I have checked other parts of the codebase i.e. stack.py, binary_trees.py, heaps.py, space_partitioning_trees.py and str() is already been implemented in examples but in case of queue.py there is no function to return the contents of the queue so is it good to add function to return the contents of queue?

[czgdp1807]

str() is already been implemented in examples but in case of queue.py there is no function to return the contents of the queue so is it good to add function to return the contents of queue?

Looks like a nice idea. Please make a separate PR for adding str method.