Given a number n, we need to check if it can be expressed as 2x + 2y or not . Here x and y can be equal.
Input : 24 Output : Yes Explanation: 24 can be expressed as 24 + 23 Input : 13 output : No Explanation: It is not possible to express 13 as sum of two powers of 2.
If we take few examples, we can notice that a number can be expressed in the form of 2^x + 2^y if the number is already a power of 2 ( for n > 1 ) or the remainder we get after subtracting previous power of two from the number is also a power of 2.
Below is the implementation of above idea
16 4 No
- Check if a number can be expressed as a^b | Set 2
- Check if a number can be expressed as power | Set 2 (Using Log)
- Check if a number can be expressed as a sum of consecutive numbers
- Check if a number can be expressed as x^y (x raised to power y)
- Check if a number can be expressed as sum two abundant numbers
- Check whether a number can be expressed as a product of single digit numbers
- Check if a prime number can be expressed as sum of two Prime Numbers
- Check if an integer can be expressed as a sum of two semi-primes
- Number expressed as sum of five consecutive integers
- N expressed as sum of 4 prime numbers
- Find ways an Integer can be expressed as sum of n-th power of unique natural numbers
- Check if the binary representation of a number has equal number of 0s and 1s in blocks
- Check whether all the rotations of a given number is greater than or equal to the given number or not
- Check if a number is divisible by all prime divisors of another number
- Check if a number has same number of set and unset bits
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Improved By : Chandan_Kumar