Sorting on several keys, Data Structure & Algorithms

Assignment Help:

Thus far, we have been considering sorting depend on single keys. However, in real life applications, we may desire to sort the data on several keys. The simplest instance is that of sorting a deck of cards. The first key for sorting is the suit-clubs, diamonds, spades and hearts. Then, inside each of suit, sorting the cards into the ascending order from Ace, twos to king. Thus this is a case of sorting on 2 keys.

Now, it can be done in two ways.

1 •   Sort 52 cards within 4 piles according to the suit.

   •   Sort each of 4 piles according to face value of the cards.

2 •   Sort 52 cards within 13 piles according to face value.

   •   Stack these piles in order and then sort into 4 piles depend on suit.

The first method is called the as MSD (Most Significant Digit) sort & second method is called as the LSD (Least Significant Digit) sort. Digit stands for key. Although they are called as sorting methods, MSD & LSD sorts only choose the order of sorting. The sorting could be done by any of the sorting methods discussed in this unit.


Related Discussions:- Sorting on several keys

Algorithm for binary search, Q. Write down the algorithm for binary search....

Q. Write down the algorithm for binary search. Which are the conditions under which sequential search of a list is preferred over the binary search?

Explain the different types of traversal on binary tree, Question 1 What i...

Question 1 What is a data structure? Discuss briefly on types of data structures Question 2 Explain the insertion and deletion operation of linked list in detail Qu

Define heap, HEAP  A heap is described to be a binary tree with a key i...

HEAP  A heap is described to be a binary tree with a key in every node, such that  1-All the leaves of the tree are on 2 adjacent levels. 2- All leaves on the lowest leve

Explain about hubs, Hubs - In reality a multiport repeater - Connect...

Hubs - In reality a multiport repeater - Connects stations in a physical star topology - As well may create multiple levels of hierarchy to remove length limitation of 10

The searching technique that takes o (1) time to find a data, The searching...

The searching technique that takes O (1) time to find a data is    Hashing is used to find a data

Write an algorithm for binary search., Write an algorithm for binary search...

Write an algorithm for binary search. Algorithm for Binary Search 1.  if (low> high) 2.  return (-1) 3.  Mid = (low + high)/2 4.  if ( X = = a[mid]) 5.  return (mid); 6.

Write the algorithm to find input and output value, This algorithm inputs 5...

This algorithm inputs 5 values and outputs how many input numbers were positive and how many were negative. Data to be used: N = 1, -5, 2, -8, -7

Determine the space complexity of euclid algorithm, 1)      Why space compl...

1)      Why space complexity is comparatively more critical than time complexity? 2)      Determine the space complexity of Euclid Algorithm?

Explain about hidden-surface, Explain about Hidden-surface Hidden-line...

Explain about Hidden-surface Hidden-line removal refers to wire-frame diagrams without surface rendering and polygonal surfaces with straight edges. Hidden-surface removal ref

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd