#BitManipulation

[tutorialcup]

Power of Two Leetcode Solution

We are given an integer and the goal is to check whether the integer is a power of two, that is, it can be represented as some whole power of '2'.

Example

16 Yes 13 No

Approach

A trivial solution can be: Check if all prime factors of the integer are all '2'. The time complexity of this method would be O(log2N). In order to do it in an optimal way, we can take help of Bit manipulations. "Any number which is a power of two can only have a single bit set in binary representation" How can it be checked that there is only a single bit set in the binary form? Consider any number, x. Now, if x is some power of two, then (x - 1) will turn off all the right bits to the set bit(set them as '0') and the set bit would be unset. x = 8, x - 1 = 7 So, using BITWISE-AND of x and (x - 1), we can say if a number is some power of two, then, x & (x - 1) = 0

Algorithm(Trivial)

- Keep dividing the number by '2' until it is not divisible by '2' anymore. - If the number is equal to '1': - The integer is a power of two - Else - The integer is not a power of two

Algorithm(Bit-Manipulation)

- Check if x & (x - 1) is equal to zero - If yes, the number is a power of 2 - The integer is not a power of 2, otherwise

Implementation

C++ Program of Power of Two Leetcode Solution Naive Method #include using namespace std; bool powerOfTwo(int n) { while(n % 2 == 0) n /= 2; return (n == 1); } int main() { int n = 16; if(powerOfTwo(n)) cout Read the full article

[gmat-cheat-sheet-downloadoo]

gmat cheat sheet download 100% working 3BS#

💾 ►►► DOWNLOAD FILE 🔥🔥🔥🔥🔥 GMAT cheat sheet. This is a draft cheat sheet. It is a work in progress and is not finished yet. Alternative Downloads. PDF (black and white); LaTeX. Use these guidelines to get through the math, critical reasoning, sentence correction, and reading comprehensions questions of the GMAT. GMAT® Quant Available for FREE Download on our website A rule or formula which takes an input (or given starting value) and produces an. Download My GMAT Cheat Sheet - GMAT Idioms (Full Version) from 30 DAY GMAT SUCCESS download document. Invalid document format. 9 Show Menu. Login or Register. This is a draft cheat sheet. It is a work in progress and is not finished yet. Simple Interest. Total Rate. Latest Cheat Sheet 2 Pages. Branches of botany and zoology Cheat Sheet different studies and fields under botany and zoology. Random Cheat Sheet 1 Page. Bitmanipulation Cheat Sheet Miracoli. About Cheatography Cheatography is a collection of cheat sheets and quick references in 25 languages for everything from maths to history! Behind the Scenes. If you have any problems, or just want to say hi, you can find us right here:. Recent Activity pravallika updated Branches of botany and zoology. Interest Formula Simple Interest. Annual Compound Interest. Surface Area: Cyclinder. Last digit is 0, 2, 4, 6 or 8. Sum of digits divisible by 3. Number formed by the last two digits is divisible by 4. Last digit is either 0 or 5. Divisible by 2 AND 3. Number formed by the last three digits is divisible by 8. Sum of the digits is divisible by 9. Total Time.

[gmat-cheat-sheet-download8z]

gmat cheat sheet download mod ZT9!

💾 ►►► DOWNLOAD FILE 🔥🔥🔥🔥🔥 GMAT cheat sheet. This is a draft cheat sheet. It is a work in progress and is not finished yet. Alternative Downloads. PDF (black and white); LaTeX. Use these guidelines to get through the math, critical reasoning, sentence correction, and reading comprehensions questions of the GMAT. GMAT® Quant Available for FREE Download on our website A rule or formula which takes an input (or given starting value) and produces an. Download My GMAT Cheat Sheet - GMAT Idioms (Full Version) from 30 DAY GMAT SUCCESS download document. Invalid document format. 9 Show Menu. Login or Register. This is a draft cheat sheet. It is a work in progress and is not finished yet. Simple Interest. Total Rate. Latest Cheat Sheet 2 Pages. Branches of botany and zoology Cheat Sheet different studies and fields under botany and zoology. Random Cheat Sheet 1 Page. Bitmanipulation Cheat Sheet Miracoli. About Cheatography Cheatography is a collection of cheat sheets and quick references in 25 languages for everything from maths to history! Behind the Scenes. If you have any problems, or just want to say hi, you can find us right here:. Recent Activity pravallika updated Branches of botany and zoology. Interest Formula Simple Interest. Annual Compound Interest. Surface Area: Cyclinder. Last digit is 0, 2, 4, 6 or 8. Sum of digits divisible by 3. Number formed by the last two digits is divisible by 4. Last digit is either 0 or 5. Divisible by 2 AND 3. Number formed by the last three digits is divisible by 8. Sum of the digits is divisible by 9. Total Time.

[javaaid-blog1]

Length Of The Longest Consecutive 1s In Binary Representation Of A Numbe...