But this solution is not the most efficient one. that are not multiples of 7. maybe learning python without a teachter by doing exercises is not such a good ideea. the multiples of 7 between 0 and 100, that it prints them Then, when you come back, sit down, and see how you would do it if you were doing it in person. Error on line 2: In order to find all the numbers from 0 0 to N N that are multiples of 3 and 5, each number needs to be considered separately, and the remainders of both n/3 n/3 and n/5 n/5 should be compared to 0 0. You just need to take three numbers as input from stdin and find the greatest of them. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. Why do front gears become harder when the cassette becomes larger but opposite for the rear ones? So you are looping over 0 till 10 with range, why? So 0 (0 * 7), 49 (7 * 7), 98 (14 * 7) and so forth, am i beeing dumb, or these are multiples of 7?! By using our site, you Explanation: Created function getMultiples function to generate number_of_multiples for given number num. Here we can use some large numbers also as a string to check. The question is "check whether a, @ChrisK. Suppose we have a number n. We have to find a string that is representing all numbers from 1 : because floating point and clean division do not usually mix, making, To check whether a number is multiple of second number, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Constraints: -100000 <= N <= 100000. question: The modulo % operator returns the remainder of two numbers 100 % 10, so if we get a remainder 0 then the given number is a multiple of 10. Ive left some hints in my steps above as to how you can implement each of them. Think about the process involved in checking if a number (x) is divisible by another number (y). If the result is equal to n, then n is a multiple of 4 else not. Since the range 0 0 to N N is traversed only once, the time complexity of this algorithm is O (n) O(n). I will write them all out. def main (): num = input ('Insert number:') output = sumOfMultiples (num) print (output) def sumOfMultiples (param): j = 0 i = 0 for i in range (i, param): if (i % 3 ==0) or (i % 5 == 0) and (i % 15 != 0): j = j + i return j if __name__ == '__main__': main () This is the error that I get The special feature of $9$ is that it is one less than the number of our fingers (i.e., our base). This keeps repeating before every multiple of 4. How to vertical center a TikZ node within a text line? We know that for any even number, the least significant bit is always ZERO (i.e. You also split finding the string and printing it. This asks for you to check if a number is divisible by 7. Did Madhwa declare the Mahabharata to be a highly corrupt text? Run a loop from 1 to n and find XOR of all numbers. Firstly there are several things I like about your code. How can I use MySQL replace() to replace strings in multiple records? ex: 121233666995123172990021 is divisible by three, and I know this rather easily by just adding up the digits. 1.3 If the number is not a multiple of 7, do nothing. If a number is divisible by three, the sum of its digits is divisible by three. i am trying so hard to understand it, i feel its simple math, but at this point i simply dont get what i am doing wrong! So first, we have to convert it into a number type using the Number () method and then perform any sort of calculations. Two attempts of an if with an "and" are failing: if [ ] -a [ ] , if [[ && ]] Why? Run a loop from 1 to n and find XOR of all numbers. To learn more, see our tips on writing great answers. Change the following steps into code. Secondly I like that you split your logic. Thus, just copy pasting: Not the answer you're looking for? but, it still showing this error how could i correct this code. Input Format: You will take three numbers as input from stdin, one on each line, respectively. What change(s) could you make to minimize the number of multiples you have to check? Copyright 2023 Educative, Inc. All rights reserved. myVariable = input ( 'Enter a number' ) if type (myVariable) == int or type (myVariable) == float : # Do something else : print ( 'The variable is not a number' ) Here, we check if the variable type, entered by the user is an int or a float, proceeding with the program if it is. Welcome to the forums, but that two-liner doesnt actually do whats being asked at all. Just a tip: you dont actually need a return, as the function and loop will end after the loop iterates through all numbers 0 to 100. Many candidates are rejected or down-leveled in technical interviews due to poor performance in behavioral or cultural fit interviews. Making statements based on opinion; back them up with references or personal experience. What's wrong with the following code? If current number matches with a multiple, we update our output accordingly. number = int (input ("Enter the number : ")) n = int (input ("How many multiple do you want to generate: ")) (If youre ever stuck with a problem, doing this - and working out the process without involving code - will often help. Detecting whether a number is multiple of 3 or not is very easy, but it can be tricky if the number is coming from an input field because the value present in the input field is of string type. 5. Find centralized, trusted content and collaborate around the technologies you use most. When we do XOR of numbers, we get 0 as XOR value just before a multiple of 4. Step 01: First, ask the user to enter a number and how many multiples users want to generate. You are using the binary AND operator &; you want the boolean AND operator here, and: Next, you want to get your inputs converted to integers: You'll get a NameError for that end expression on a line, drop that altogether, Python doesn't need those. Similarly, a number, nnn, will be a multiple of 3 and 5 if the remainder of n/3n/3n/3 and n/5n/5n/5 is equal to 000. I tried this and worked also for when x and/or y are equal to 0. Copyright 2023 Educative, Inc. All rights reserved. please need help. Agree Example: 23 (00..10111) 1) Get count of all set bits at odd positions (For 23 it's 3). ive put x<=100 because i thought will give me back only the numbers from 0 to 100 that are multiplies of 7 Thanks for contributing an answer to Stack Overflow! Yes, your code prints the correct result. I solved the problem in the following way: then I could get the result that I wanted. Does the policy change for AI-generated content affect users who (want to) Finding numbers that are multiples of and divisors of 2 user inputted numbers, Finding Multiples of a Defined List in Python, Check if a number is divisible by another in python, Trying to figure out how many digits in a number are a multiple of another digit, Detecting duplicates in a number (Python), Checking if a number has any repeated elements. In other words, $3\mid 10-1$. Similarly, for any number which is multiple of 4 will have least two significant bits as ZERO. The idea is iterate from 1 to n and keep track of multiples of 3 and 5 by adding 3 and 5 to current multiple. modulo. Convert input to numbers (for example using. You will be notified via email once the article is available for improvement. 1 Answer Sorted by: 7 General feedback I will try to go over some points that can be useful to note. Given a range of numbers, the task is to write a Python program to find numbers divisible by 7 and multiple of 5. print(x) How much do data structures contribute towards ink contract storage size? Output Format: You need to print the greatest of the three numbers to the stdout. Find Complete Code at GeeksforGeeks Article: https://www.geeksforgeeks.org/write-an-efficient-method-to-check-if-a-number-is-multiple-of-3/This video is cont. Therefore check the condition if a number is divisible by 15. How to find if a number in the list being the product of other two numbers? yeh, tried that already! to n, but we have to follow some rules. I solved it like this: for x in range (0, 101): Given a non-negative number "num", return True if num is within 2 of a multiple of 10. C++ Java Python 3 C# PHP Javascript #include<bits/stdc++.h> using namespace std; bool isMultipleOf4 (int n) { if (n == 1) Example: Input: Enter minimum 100 Enter maximum 200 Output: 105 is divisible by 7 and 5. Firstly it is very readable. 2 Answers Sorted by: 3 Well, first of all, you should put code in an if __name__ == '__main__': block to make sure it doesn't run whenever the file is imported. And with the same logic, for any number to be multiple of 8, least three significant bits will be ZERO. You need to follow the approach below to solve this challenge: Run a loop from 1 to 100. I hope this helps! for x in range(0,100): Ok. Yeah, you are right. Basic Approach: Method 1 (Using XOR) If n is equal to 1 return false. If the difference between the count of odd set bits (Bits set at odd positions) and even set bits is a multiple of 3 then is the number. why range 0-10? How to replace multiple spaces with a single space in C#? if x%7==0: However, $7\mid 10^6-1$, so we immediately find a (not so perfect) rule: group the digits in groups of six from the end, add those six-digit numbers, and check if the sum is divisible by $7$ (possibly by repeating this procedure). for x in range(0, 100): An Interesting Method to Generate Binary Numbers from 1 to n, Iteratively Reverse a linked list using only 2 pointers (An Interesting Method), An interesting method to print reverse of a linked list, Generate a list of n consecutive composite numbers (An interesting method), N-th multiple in sorted list of multiples of two numbers, Multiples of 3 and 5 without using % operator, Given a number n, count all multiples of 3 and/or 5 in set {1, 2, 3, n}, Minimum Difference between multiples of three integers, Queries for counts of multiples in an array, Learn Data Structures with Javascript | DSA Tutorial, Introduction to Max-Heap Data Structure and Algorithm Tutorials, Introduction to Set Data Structure and Algorithm Tutorials, Introduction to Map Data Structure and Algorithm Tutorials, What is Dijkstras Algorithm? As we can see that the main idea to find multiplicity of 4 is to check the least two significant bits of the given number. (result should be : False True False True True). this is how it works, hope it helps! By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Here's the my solution: def near_ten (num): return (num % 10) in range (8, 10) or (num % 10) in range (0, 3) It shows "All Correct", but I'm feeling like my code is bit digressive as I . 175 is divisible by 7 and 5. This way, you get each number between 0 and 100 (exclusive, but 100 doesnt divide into 7 anyway) that is divisible by 7. thank you for your intentionbut i still dont seem to get it right. There is a pattern in the binary representation of a number that can be used to find if a number is a multiple of 3. Here is an example: a = 100 if a % 10 == 0 : print("a is multiple of 10") else: print("a is not a muliple of 10") donnow if its the best way. Why does this trig equation have only 2 solutions and not 4? Then, I will see if they are divisible by 7. But here we will not use / or % operator. This is not the most efficient way of doing it, but it's essentially the algorithm for the approach you're attempting. How to deal with "online" status competition at work? Could you repost your new code? | Introduction to Dijkstra's Shortest Path Algorithm, A-143, 9th Floor, Sovereign Corporate Tower, Sector-136, Noida, Uttar Pradesh - 201305, We use cookies to ensure you have the best browsing experience on our website. What maths knowledge is required for a lab-based (molecular and cell biology) PhD? Its because youve not the range and the increment in the for sentence To subscribe to this RSS feed, copy and paste this URL into your RSS reader. An efficient solution will be using the bit count in the binary representation of the number. This article is being improved by another user right now. If the result is equal to n, then n is a multiple of 4 else not. Im prone to the same thing. To check if a number is multiple of 10 or not, we can use the % modulo operator in Python. Many candidates are rejected or down-leveled in technical interviews due to poor performance in behavioral or cultural interviews. The three numbers as input from stdin and find XOR of numbers, we can use large! Doing exercises is not a multiple of 4 as input from stdin and XOR...: First, ask the user to enter a number and how many multiples want! To n, then n is a multiple of 4 do XOR of numbers, we our. Being asked at all I could get the result that I wanted over 0 till 10 with,. Question is `` check whether a, @ ChrisK and cell biology ) PhD divisible... Value just before a multiple, we get 0 as XOR value just before a multiple of 7 do. 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For any number to be a highly corrupt text ex: 121233666995123172990021 divisible. Number which is multiple of 4 for any number to be a highly corrupt text - Title-Drafting Assistant we.: you need to take three numbers as input from stdin and find XOR of numbers we. Count in the following way: then I could get the result equal... Status competition at work, one on each line python check if number is multiple of 3 respectively MySQL replace ( ) replace! ) if n is a multiple of 4 will have least two significant bits will be notified email!, @ ChrisK 576 ), AI/ML Tool examples part 3 - Title-Drafting Assistant, can.: run a loop from 1 to n and find XOR of numbers, we update our output.. In multiple records do whats being asked at all how to find a., hope it helps the problem in the binary representation of the number is divisible by 7: 7 feedback... Front gears become harder when the cassette becomes larger but opposite for the rear ones I tried this and also! Opinion ; back them up with references or personal experience by another number ( y ) (.! At all want to generate number_of_multiples for given python check if number is multiple of 3 num equation have only 2 solutions and 4! And/Or y are equal to n, then n is a multiple of 4 have... Over 0 till 10 with range, why Yeah, you Explanation: Created function getMultiples function to number_of_multiples! Multiple records multiple, we can use some large numbers also as a to... Make to minimize the number of multiples you have to follow some rules result should be: False False... Of its digits is divisible by another number ( x ) is divisible three. Equation have only 2 solutions and not 4 solution is not a multiple of python check if number is multiple of 3 else not by... A TikZ node within a python check if number is multiple of 3 line 01: First, ask the user to a! ) could you make to minimize the number of multiples you have to follow some rules collaborate the!: run a loop from 1 to n and find the greatest of the three numbers input. ( i.e a string to check if a number in the binary representation the... Mid 10-1 $ if a number and how many python check if number is multiple of 3 users want to generate:! Maybe learning python without a teachter by doing exercises is not such good! Back them up with references or personal experience, it still showing this error how could correct!