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Numbers that are not divided by square of its lower terms.

+6 votes
254 views

First see this example: let you have a number 8 which is divisible by 4 which is square of 2 and 27 which is divisible by 9 which is square of 3.I need a solution for numbers input from 1 to 10^18.hope for efficient program written in any programming language.
Thanks in advance.

posted Jun 28, 2016 by Shivam Kumar Pandey

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+2 votes

it is illegal to share some certain prime numbers in US and if you do so,you will get arrested.Follow this link to get more details :
https://www.youtube.com/watch?v=LnEyjwdoj7g
My question is : it is very easy to find multiplication of two prime numbers but tough to get what are the prime numbers which multiplication results this number . Example : 7*11= 77 but you are given 77 = ? * ? where ?= two prime numbers only (ans = 7 and 11).Another example : 11*13= 143 but you need to solve it for 143 and you output : 11 13
So I need a program ,efficient one, to get solutions to such type of mathematical problem.
Adding more examples:
input:1. 21 -> 3,7
2. 189 -> 3,7,9
3.1363 -> 29,47 .... and if is not possible then print -1 example 1. 4 and its factors 2*2 where 2 is repeated so print -1
2. 9-> -1
3. 24->-1 ( prime factors are 2^3 * 3= 8*3 where 8 is not prime so print -1).
Thanks in advance.

+3 votes

A number is called as a Jumping Number if all adjacent digits in it differ by 1. The difference between ‘9’ and ‘0’ is not considered as 1.
All single digit numbers are considered as Jumping Numbers. For example 7, 8987 and 4343456 are Jumping numbers but 796 and 89098 are not.

Given a positive number x, print all Jumping Numbers smaller than or equal to x. The numbers can be printed in any order.

Example:

Input: x = 20
Output: 0 1 2 3 4 5 6 7 8 9 10 12

Input: x = 105
Output: 0 1 2 3 4 5 6 7 8 9 10 12
21 23 32 34 43 45 54 56 65
67 76 78 87 89 98 101

Note: Order of output doesn't matter,
i,e., numbers can be printed in any order

+1 vote

Are C++11 final classes really final, or is it still possible to define a derived class through some hack without violating language rules?

It seems we devirtualize calls to virtual members of final classes in some cases, so I assume final is really final, but I'm not sure. :-)

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