Reverse Bits | LeetCode 190 | C++, Java, Python

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This is the real content which gives us the technical skills we need..

agileprogramming

hats off!!!.. every single day you show up !!!

ambersinghrok

In the first approach, why are we doing "res <<= 1" before hand instead of doing it at the last of the loop??

AyushRaj-pmdz

Genuinely grateful to u sir. U are seriously better than all online competitive coder on youtube ( most of them just showoff)

nikhilghodke

Very nice explanation sir...first solution which comes to me is to use builtin function..(return int('{:032b}'.format(n)[::-1], 2)) which is very easy(convert integer into 32 bits binary, reverse & convert into integer ).

chetanshrivastava

The second approach complicates everything

anjanobalesh

Very good explanation. I tried to understand this logic in so many videos/code but was not able to follow until I saw this video. Thanks !!!

rohitgupta

very intuitive ! what digital pad you use ? can you share the link if possible ?

srivatsav

approach 2 (bit masking) can't be done in java. do you know why?

rainethai

thank you for this amazing explanation

monojtewari

Nice explanation your videos are really good...please keep on making such videos...you are doing a great job.

paragroy

I hope all of you watching this will be great Software Engineers

devanshsolani

i converted the bit to string using bitset and reversed it but how to convert it back to

GokuVidhayak

C++
bitset<32> x(n);
auto str = x.to_string();
std::reverse(str.begin(), str.end());
auto y = std::bitset<32>(str);
return (uint32_t) y.to_ulong();

Java
String
bin=new
return Integer.parseInt(bin, 2);

but same logic not worked in java.
because java do not have unsigned type :(

prabhatchanchal

Really helpful, keep the good work going on..

kalyanreddy

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