Inc dec sequence

#1

my code is not able to pass one particular test case …can u help me figure it out.?

#2

Hi Shristi
I think you shared the link of other problem please send me the correct link of problem code so that i can help you further.

#3
#4

The link is not working Please save the code to server and then share the link.

#5
#6

Hi Shrishti
you need not to take array, one can also perform the question without using array. As every time we just check two consecutive numbers to tell whether the seqeunce is increasing or decreasing, so why should we store all of the numbers.

  • A sequence is true if you can split it into two sub sequence such that first sequence is strictly increasing and second sequence is strictly decreasing.

  • For e.g.,
    1 2 3 4 5
    This sequence is also true as we can split it into two sequence like., sequence one is empty and sequence two is 1 2 3 4 5.

  • Let’s take another example.,
    5 4 3 2 1
    This is also true as we can split it such that sequence one is5 4 3 2 1 and sequence two is empty.
    According to the problem statement, we can say the if the sequence decreases then it should not increase, if this is the case one can directly print false else print true.

  • The third case is when the sequence is first strictly decreasing then strictly increasing.
    For example :
    9 5 2 7 10
    The sequence first decreases starting from 9 to 2 - { 9, 5, 2 } and then starts increasing - { 7, 10}. Note that it can also be broken as { 9, 5} and { 2, 7, 10} .
    Since the sequence fulfills the required condition , we would also print “true” for this.

If a sequence does not meet any of the above criteria , we return “false” for it.

I have given a code in which i use simple logic Go through that once and if you Still want to discuss please let me know.

#7

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