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Interview questions puzzles

 
Ranch Hand
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Today I went for  Interview and following question asked and I gave my best bet, please correct me if I am wrong

1.  What is the next number in series ::  00122436485
my best bet ::  1

2.  There are 25 house,  10 house have less than 6 room,   10 house has more than 7 room, 4 house has more than 8 room  how many house have either 6 or 7 or 8 room.
my best bet  :: 11

3.   There are four people namely, A, B, C, D  , which needs to cross bridge ,  only 2 poeple can cross at once in night,  there is only one night lamp, one person need to carry lamp
following is the time taken by each
A : 10 mins
B: 5 mins
c : 2 mins
D : 1 min

first D will cross along with A, then go back and cross with B, and then with C will totally take 19 mins

Question :   how they will take 17 mins ,  please tell the process ,  it was written that 17 min is valid option.


4. Write puesdocode  to  reverse the string but not letter :   like  'his voice is loud"     should be   "loud is voice his"

5.write pudeocode  to write all permutation combination of N letter  like "abc"  has 6 different combination write generic program



Thanks
Amit

 
lowercase baba
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#3 isn't hard...

C&D cross - 2 minutes
D returns- 1 minute
A&B cross - 10 minutes
C returns - 2 minutes
C&D cross - 2 minutes

17 minutes total.
 
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00122436485 can be broken down as 2 series interleaved:



Next number in my opinion should be 10 or next digit should be 1
 
salvin francis
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No 4, If I understand correctly is to simply take a sentence, parse it and print the "words" in the reverse order.
I would suggest splitting it using space as a delimiter and storing it in a List. You could easily reverse this list using Collections.reverse(list); and then print it back.
 
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