DOOFISH MATRIX - DFMTRX VIDEO EDITORIAL

som_s_mukherji · January 13, 2020, 9:45am

Part 1:

Part 2:

anon70990627 · January 13, 2020, 11:05am

Thank you for the video. Really awesome explanation

pkpawan123 · January 13, 2020, 3:03pm

good tutorial bro

jazell · January 13, 2020, 5:21pm

@som_s_mukherji could you make a tutorial for ‘ISBIAS’ too?

anon6509870 · January 14, 2020, 7:50am

observer for problem isbias the maximal sequence (say inc) and minimal sequence (say dec)

always for any sequence of numbers appears as
inc dec inc dec inc dec inc …
or
dec inc dec inc dec …

so if it starts with decreasing sequence and ends at decreasing sequence
then there is one less increasing sequence and so answer is no

same for starting with inc sequence and ending with increasing sequence
ans is NO

otherwise is YES

kuldeep4 · January 14, 2020, 8:04am

thanks

aru05ind · January 15, 2020, 9:13am

Woowww !!!
What a beautiful explanation !!!
Thanks for helping us with elaborate & detailed illustrations… @som_s_mukherji

manish_75 · January 15, 2020, 10:26am

Thanks. Really awesome explanation.

arnauddesombre · January 17, 2020, 1:58pm

You state in the first video that there is no solution if n is odd (and n>1).
Can someone (problem setter maybe) provide a proof of this?

tmwilliamlin · January 17, 2020, 2:13pm

Proof is provided here DFMTRX Video Solution.