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10 Ways to Speed Up Your Python Code 1. List Comprehensions numbers = [x**2 for x in range(100000) if x % 2 == 0] instead of numbers = [] for x in range(100000): if x % 2 == 0: numbers.append(x**2) 2. Use the Built-In Functions Many of Python’s built-in functions are written in C, which makes them much faster than a pure python solution. 3. Function Calls Are Expensive Function calls are expensive in Python. While it is often good practice to separate code into functions, there are times where you should be cautious about calling functions from inside of a loop. It is better to iterate inside a function than to iterate and call a function each iteration. 4. Lazy Module Importing If you want to use the time.sleep() function in your code, you don't necessarily need to import the entire time package. Instead, you can just do from time import sleep and avoid the overhead of loading basically everything. 5. Take Advantage of Numpy Numpy is a highly optimized library built with C. It is almost always faster to offload complex math to Numpy rather than relying on the Python interpreter. 6. Try Multiprocessing Multiprocessing can bring large performance increases to a Python script, but it can be difficult to implement properly compared to other methods mentioned in this post. 7. Be Careful with Bulky Libraries One of the advantages Python has over other programming languages is the rich selection of third-party libraries available to developers. But, what we may not always consider is the size of the library we are using as a dependency, which could actually decrease the performance of your Python code. 8. Avoid Global Variables Python is slightly faster at retrieving local variables than global ones. It is simply best to avoid global variables when possible. 9. Try Multiple Solutions Being able to solve a problem in multiple ways is nice. But, there is often a solution that is faster than the rest and sometimes it comes down to just using a different method or data structure. 10. Think About Your Data Structures Searching a dictionary or set is insanely fast, but lists take time proportional to the length of the list. However, sets and dictionaries do not maintain order. If you care about the order of your data, you can’t make use of dictionaries or sets.

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100+ Practice Questions       ❍ C/C++       ❍ Python       ❍ JavaScript       ❍ Java       ❍ C#       ❍ Golang ➊  Simple Numbers ➀  Find a digit at a specific place in a number ➁  Find count of digits in a number ➂  Find the largest digit ➃  Find the 2nd largest digit ➄  Find the kth largest digit ➅  Find the smallest digit ➆  Find the 2nd smallest digit ➇  Find the kth smallest digit ➈  Find generic root (sum of all digits) of a number ➉  Reverse the digits in a number ➀➀  Rotate the digits in a number ➀➁  Is the number a palindrome? ➀➂  Find sum of 'n' numbers ➀➃  Check if a number is perfect square ➀➄  Find a number in an AP sequence ➀➅  Find a number in a GP sequence ➀➆  Find a number in fibonacci sequence ➀➇  Check number divisibility by 2, 3, 5, 9 ➀➈  Check if a number is primary or not 20.  Given a number, print all primes smaller than it ➁➀  Check if a number is circular prime or not ➁➁  Find all prime factors of a number ➁➂  Find the GCD of 2 numbers ➁➃  Find the LCM of 2 numbers ➁➄ Find the factorial of a number ➁➅ Find the exponentiation of a number ➋ Unit Conversion ➀  Number Base (Binary, Octal, Hexadecimal, Decimal) ➁  Weight (gram, kg, pound) ➂  Height (cm, m, inch, feet) ➃  Temperature (centigrade, fahrenhite) ➄  Distance (km, mile) ➅  Area (m², km², acre) ➆  Volume (ltr, gallon) ➇  Time (sec, min, hour) ➈  Currency ➌  Calculator ➀  Loan EMI Calculator ➁  Fixed Deposit Returns Calculator ➂  Interest Calculator ➃  BMI Calculator ➄  Item Price (considering tax, discount, shipping) ➅  Tip Calculator ➍  Geometry ➀  Find distance between 2 points ➁  Given 2 sides of a right angle triangle, find the 3rd ➂  Find 3rd angle of a triangle when 2 are given ➃  Area of a triangle when 3 sides are given ➄  Area of a right angle triangle ➅  Perimeter of a Square ➆  Area of a Square ➇  Perimeter of a Rectangle ➈  Area of a Rectangle ➉  Circumference of a Circle ➀➀  Area of a Circle ➀➁  Circumference of a Semi-Circle ➀➂  Area of a Semi-Circle ➀➃  Area of a Ring ➀➄  Circumference of an Ellipse ➀➅  Area of an Ellipse ➀➆  Suface Area of a Sphere ➀➇  Volume of a Sphere ➀➈  Surface Area of a Hemisphere 20.  Volume of a Hemisphere ➁➀  Surface area of a Cube ➁➁  Volume of a Cube ➁➂  Surface area of a Cylinder ➁➃  Volume of a Cylinder ➎  Vector ➀  Find Scalar Multiplication of a vector ➁  Find addition/subtraction of vectors ➂  Find magnitude of a vector ➃  Find an unit vector along a given vector ➄  Find dot product of 2 vectors ➅  Find cross product of 2 vectors ➆  Check if 2 vectors are orthogonal ➏  Matrix ➀  Find the determinant of a matrix ➁  Find Scalar Multiplication of a matrix ➂  Find addition/subtraction of matrices ➃  Find the transpose of a matrix ➄  Find if 2 matrices are orthogonal ➅  Find inverse of a 2x2 and 3x3 matrix ➐  Set ➀  Find Union of 2 sets ➁  Find Intersection of 2 sets ➂  Find the Difference of 2 sets ➃  Find the Symmetric Difference of 2 sets ➄  Find if a set is subset/superset of another set ➅  Find if 2 sets are disjoints ➑  Special Numbers ➀  Strong Number ➁  Perfect Number ➂  Armstrong Number ➃  Harshad Number ➄  Kaprekar Number ➅  Lychrel Number ➆  Narcissistic Decimal Number ➇  Lucus Number ➈  Catalan Number ➉  Duck Number ➀➀  Ugly Number ➀➁  Abundant Number ➀➂  Deficient Number ➀➃  Automorphic Number ➀➄  Magic Number ➀➅  Friendly Pair Numbers ➀➆  Neon Number ➀➇  Spy Number ➀➈  Happy Number 20.  Sunny Number ➁➀  Disarium Number ➁➁  Pronic Number ➁➂  Trimorphic Number ➁➃  Evil Number ➁➄  Amicable Pairs ⬘ If you want to excel in programming, practice a lot. Join for more: https://t.me/coderbroo ⬙ Problems based on numbers are easy to start with and they help in improving your analytical skills.

100+ Practice Questions ❍ C/C++ ❍ Python ❍ JavaScript ❍ Java ❍ C# ❍ Golang ➊ Simple Numbers ➀ Find a digit at a specific place in a number ➁ Find count of digits in a number ➂ Find the largest digit ➃ Find the 2nd largest digit ➄ Find the kth largest digit ➅ Find the smallest digit ➆ Find the 2nd smallest digit ➇ Find the kth smallest digit ➈ Find generic root (sum of all digits) of a number ➉ Reverse the digits in a number ➀➀ Rotate the digits in a number ➀➁ Is the number a palindrome? ➀➂ Find sum of 'n' numbers ➀➃ Check if a number is perfect square ➀➄ Find a number in an AP sequence ➀➅ Find a number in a GP sequence ➀➆ Find a number in fibonacci sequence ➀➇ Check number divisibility by 2, 3, 5, 9 ➀➈ Check if a number is primary or not 20. Given a number, print all primes smaller than it ➁➀ Check if a number is circular prime or not ➁➁ Find all prime factors of a number ➁➂ Find the GCD of 2 numbers ➁➃ Find the LCM of 2 numbers ➁➄ Find the factorial of a number ➁➅ Find the exponentiation of a number ➋ Unit Conversion ➀ Number Base (Binary, Octal, Hexadecimal, Decimal) ➁ Weight (gram, kg, pound) ➂ Height (cm, m, inch, feet) ➃ Temperature (centigrade, fahrenhite) ➄ Distance (km, mile) ➅ Area (m², km², acre) ➆ Volume (ltr, gallon) ➇ Time (sec, min, hour) ➈ Currency ➌ Calculator ➀ Loan EMI Calculator ➁ Fixed Deposit Returns Calculator ➂ Interest Calculator ➃ BMI Calculator ➄ Item Price (considering tax, discount, shipping) ➅ Tip Calculator ➍ Geometry ➀ Find distance between 2 points ➁ Given 2 sides of a right angle triangle, find the 3rd ➂ Find 3rd angle of a triangle when 2 are given ➃ Area of a triangle when 3 sides are given ➄ Area of a right angle triangle ➅ Perimeter of a Square ➆ Area of a Square ➇ Perimeter of a Rectangle ➈ Area of a Rectangle ➉ Circumference of a Circle ➀➀ Area of a Circle ➀➁ Circumference of a Semi-Circle ➀➂ Area of a Semi-Circle ➀➃ Area of a Ring ➀➄ Circumference of an Ellipse ➀➅ Area of an Ellipse ➀➆ Suface Area of a Sphere ➀➇ Volume of a Sphere ➀➈ Surface Area of a Hemisphere 20. Volume of a Hemisphere ➁➀ Surface area of a Cube ➁➁ Volume of a Cube ➁➂ Surface area of a Cylinder ➁➃ Volume of a Cylinder ➎ Vector ➀ Find Scalar Multiplication of a vector ➁ Find addition/subtraction of vectors ➂ Find magnitude of a vector ➃ Find an unit vector along a given vector ➄ Find dot product of 2 vectors ➅ Find cross product of 2 vectors ➆ Check if 2 vectors are orthogonal ➏ Matrix ➀ Find the determinant of a matrix ➁ Find Scalar Multiplication of a matrix ➂ Find addition/subtraction of matrices ➃ Find the transpose of a matrix ➄ Find if 2 matrices are orthogonal ➅ Find inverse of a 2x2 and 3x3 matrix ➐ Set ➀ Find Union of 2 sets ➁ Find Intersection of 2 sets ➂ Find the Difference of 2 sets ➃ Find the Symmetric Difference of 2 sets ➄ Find if a set is subset/superset of another set ➅ Find if 2 sets are disjoints ➑ Special Numbers ➀ Strong Number ➁ Perfect Number ➂ Armstrong Number ➃ Harshad Number ➄ Kaprekar Number ➅ Lychrel Number ➆ Narcissistic Decimal Number ➇ Lucus Number ➈ Catalan Number ➉ Duck Number ➀➀ Ugly Number ➀➁ Abundant Number ➀➂ Deficient Number ➀➃ Automorphic Number ➀➄ Magic Number ➀➅ Friendly Pair Numbers ➀➆ Neon Number ➀➇ Spy Number ➀➈ Happy Number 20. Sunny Number ➁➀ Disarium Number ➁➁ Pronic Number ➁➂ Trimorphic Number ➁➃ Evil Number ➁➄ Amicable Pairs ⬘ If you want to excel in programming, practice a lot. Join for more: https://t.me/programming_guide ⬙ Problems based on numbers are easy to start with and they help in improving your analytical skills.

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🔟 𝘁𝗶𝗽𝘀 𝗳𝗼𝗿 𝗻𝗲𝘄 𝗰𝗼𝗱𝗲𝗿𝘀: 🔖 1. Learn Fundamentals:  Use W3Schools, FreeCodeCamp, or MDN for solid basics. 2. Watch and Code Along:  Follow YouTube tutorials to code in real-time. 3. Practice Regularly:  Build small projects to sharpen your skills. 4. Join Coding Communities:  Engage on platforms like X, Discord, and Reddit for support. 5. Use AI Tools Wisely: Leverage tools like ChatGPT responsibly to aid learning. 6. Master Git and Version Control:  Learn to manage your code effectively. 7. Stay Updated:  Follow tech blogs, newsletters, and podcasts. 8. Network:  Attend meetups, hackathons, and online coding events. 9. Explore Open Source:  Contribute to projects to gain experience. 10.Never Stop Learning:  Technology evolves—keep exploring new languages and frameworks. Don't forget to React 🚀💗💥

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