Monday 25 February 2013

MACHINE INPUT- PART 2

In this article we will discuss machine input problems where 2 elements are shifted in one step. To understand this part concept of first part should be clear. ( first part )

The basic concept is similar to the first part ( CLICK HERE ).

How to find that the given machine input is based on 2 element shifting?
look at the last step of given steps.. the arrangement will be in the form of all alphabet  and after that all numbers following 1:1 ratio.
if alphabets are on one side and numbers on the other side then here 2 elements are shifted at a time.

How to solve the question?
1. look at the first two steps to determine the pattern of shifting. 


WHY 1 and 2 step are very necessary to examine?

first to steps explain the pattern of shifting...


What is this pattern of shifting?

 here we have to shift 2 elements ryt?...  alphabets and numbers can be arranged in increasing or decreasing order....  but that is not the main concern here......
the main concern is wheather they are moving from left to right or right to left in the steps... examining this is more important......
confused about this part??????? lets take an example..

 QUESTION-  L , 18 , A , 12 , Q  , 93  , U  , 32  , T  , 46 , W
STEP 1.          A , L , 18 ,  Q , 93  , U  , 32 ,  T   , 46 , W , 12
STEP 2.          L , A ,  Q , 93  , U  , 32 ,  T  , 46  , W , 12 , 18
STEP 3.         Q ,  L ,  A , 93  , U  , T  ,  46 , W  , 12 , 18 , 32
STEP 4.         T ,  Q ,  L ,  A  , 93  , U ,  W , 12  , 18 , 32 , 46
STEP 5.         U ,  T ,  Q ,  L  , A   , W , 12 , 18  , 32 , 46 , 93
STEP 6.        W , U ,  T ,  Q  ,  L    , A , 12 , 18  , 32 , 46 , 93

NOW step one shows that the alphabets are arranged on the left side where as numbers on the right.....

but steps 2 explains that alphabets are arranged in increasing order from LEFT TO RIGHT ( A is being shifted to right side and L comes in its place and so on....)

also the numbers are arranged in increasing order but FROM RIGHT TO LEFT ( 12 is being shifted to the left when 18 comes in 2nd step and so on...)

detecting this part is very important.... after this any question based on this machine input is NOTHING... RYT?

NOTE- marking of the sequence based on this input can be done as explained in the previous post but keep in mind that here you have to mark 2 elements at one time.......

QUESTION - answer the following question based on above machine input...
sequence is- U , 84 , C , 77 , Q , 86 , 13 , B , 11 , S

Q1. what is the 2nd step?
ANS-   C , B , U , 84 , 77 , Q , 86 , S , 11 , 13 

Q2. what is last but one step? ( most candidate gets confused about this statement.. it simply means 2nd last statement)

ANS-   S , Q , C , B , U , 86 , 11 , 13 , 77 , 84


NOTE- all of you have seen one option as CAN NOT BE DETERMINE .....  

when this option is true?

consider the above machine input ( given as example)
now the question is.. base on the above input if the step 2. is A , G , D,  F, G ,D ,1  , 2 , 34 , 4 then find step 1......... if such a question comes then the answer will always be CANT BE DETERMINE..
bur step 3 can be determine...
only the step prior to the given step cant be determine....

SUGGESTIONS ARE WELCOME..

 
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