  Intermediate PythonIntermediate level challenges and solutions

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• Challenges
• Prime Time

For this challenge you will be determining if an argument is a prime number. 16115 solutions

• Run Length

For this challenge you will determine the Run Length Encoding of a string. 11445 solutions

• Prime Mover

For this challenge you will be returning a certain prime number. 8981 solutions

• Palindrome Two

For this challenge you will be determining if a string is a palindrome. 9293 solutions

• Division

For this challenge you will determine the Greatest Common Factor between two numbers. 7689 solutions

• String Scramble

For this challenge you will determine if string 1 can be rearranged into string 2. 9440 solutions

• Arith Geo II

For this challenge you will determine if numbers within an array follow an arithmetic or geometric sequence. 5553 solutions

For this challenge you will determine if numbers in an array can add up to a certain number in the array. 6449 solutions

• Binary Converter

For this challenge you will be converting a number from binary to decimal. 5407 solutions

• Letter Count

For this challenge you will determine which word has the greatest number of repeated letters. 5806 solutions

• Caesar Cipher

For this challenge you will transform a string using the Caesar Cipher. 6651 solutions

• Simple Mode

For this challenge you will determine the mode, the number that appears most frequently, in an array. 6183 solutions

• Consecutive

For this challenge you will determine how to order an array of numbers consecutively. 4852 solutions

• Formatted Division

For this challenge you will divide two numbers and print them in a certain format. 4217 solutions

• Counting Minutes

For this challenge you will return the total number of minutes between two times. 3412 solutions

• Permutation Step

For this challenge you will determine the next greatest number using the same numbers of a given argument. 5279 solutions

• Prime Checker

For this challenge you will determine if you can arrange a number to be a prime number. 3241 solutions

• Dash Insert II

For this challenge you will be manipulating a string using dashes (-). 5388 solutions

• Swap II

For this challenge you will be manipulating numbers in a string based on the characters. 3565 solutions

• Number Search

For this challenge you will traverse a string searching for all the numbers and then you will add them up. 4319 solutions

• Triple Double

For this challenge you will determine if there is a number that appears consecutively in both arguments. 3469 solutions

• Bracket Matcher

For this challenge you will determine if the brackets in a string are correctly matched up. 3951 solutions

• String Reduction

For this challenge you will manipulate a string of characters using a simple reduction method. 4116 solutions

• ThreeFive Multiples

For this challenge you will be determining the multiples of a specific number. 3216 solutions

• Binary Search Tree LCA

For this challenge you will attempt to find the lowest common ancestor of a binary search tree. 610 solutions

• Coin Determiner

For this challenge you will be determining the smallest combination of coins for a given output 3739 solutions

• Fibonacci Checker

For this challenge you will be determining whether a number is part of the Fibonacci sequence. 3833 solutions

• Multiple Brackets

For this challenge you will determine if all the brackets in a string are correctly matched up. 2807 solutions

• Most Free Time

For this challenge you will determine what period of the day gives the most free time. 2330 solutions

• Overlapping Rectangles

For this challenge you will be determining the areas of rectangles. 1945 solutions

• Look Say Sequence

For this challenge you will determine the next number in a sequence. 1643 solutions

• Distinct List

For this challenge you will remove duplicate elements from an array. 3472 solutions

• Number Encoding

For this challenge you will encode a given string following a specific rule. 2169 solutions

• Stock Picker

For this challenge you will determine the maximum profit that can be made in a range of stock prices. 3705 solutions

• Max Subarray

For this challenge you will determine the largest sum subarray. 3399 solutions

• Missing Digit

For this challenge you will determine what the variable is in a mathematical equation. 3225 solutions

• K Unique Characters

For this challenge you will be searching a string for a particular substring. 2157 solutions

• Bitmap Holes

For this challenge you will be searching within a 2D matrix. 1453 solutions

• Symmetric Tree

For this challenge you will traverse a binary tree and determine if it is symmetric. 818 solutions

• Binary Tree LCA

For this challenge you will attempt to find the lowest common ancestor of a binary tree. 522 solutions

• LRU Cache

For this challenge you will determine the order of elements within a simulated cache. 2799 solutions

• Tree Constructor

For this challenge you will determine if an array of integer pairs can form a binary tree properly. 1666 solutions

• Longest Increasing Sequence

For this challenge you will compute the length of the longest increasing subsequence. 3929 solutions

• Array Min Jumps

For this challenge you will determine how quickly you can reach the end of an array. 509 solutions

• Even Pairs

For this challenge you will determine if a pair of even numbers exists somewhere in a string. 1610 solutions

• Nearest Smaller Values

For this challenge you will determine the nearest smaller value for each number in an array. 1383 solutions

• Matrix Spiral

For this challenge you will print a 2D matrix in spiral order. 1072 solutions

• Word Split

For this challenge you will attempt to split a long string of characters into actual words. 3143 solutions

• Pair Searching

For this challenge you will determine how to multiply a number to find a duplicate pair. 289 solutions

• Boggle Solver

For this challenge you will attempt to find words in a matrix of letters. 345 solutions

• HTML Elements

For this challenge you will determine whether HTML elements are nested correctly. 1454 solutions

• Missing Digit II

For this challenge you will determine what the variables are in a mathematical equation. 255 solutions

• Palindromic Substring

For this challenge you will be finding the longest palindromic substring. 2048 solutions

• Trapping Water

For this challenge you will determine the largest amount of water you can trap within a boundary. 1181 solutions

• Matrix Path

For this challenge you will determine if a path exists in a boolean matrix. 445 solutions

• Seating Students

For this challenge you will determine how many different ways students can sit next to each other. 2360 solutions

• Longest Matrix Path

For this challenge you will be searching for the longest path in a 2D matrix. 327 solutions

• Min Window Substring

For this challenge you will be searching for the optimal substring of k characters. 3440 solutions

• Matrix Chains

For this challenge you will determine the best order to multiply matrices. 206 solutions

• Histogram Area

For this challenge you will determine the largest area under a histogram. 1139 solutions

• Matching Characters

For this challenge you will be determining the largest number of unique characters between two letters. 1105 solutions

• Ternary Converter

For this challenge you will be converting a decimal number into ternary. 195 solutions

• Linear Congruence

For this challenge you will be solving a linear congruence equation. 104 solutions

• Formatted Number

For this challenge you will be determining if a string is a valid number. 622 solutions

• Largest Row Column

For this challenge you will be finding the largest sum of three digits in a matrix. 158 solutions

• Eight Queens

This challenge will require knowledge of chess pieces and their movements. 4786 solutions

• Three Points

For this challenge you will be plotting a line on a Cartesian grid. 411 solutions

• Character Removal

For this challenge you will attempt to modify a word and then find it within a dictionary. 454 solutions

For this challenge you will be determining if a string is a valid password. 2625 solutions

• Preorder Traversal

For this challenge you will be traversing a binary tree. 485 solutions

• String Zigzag

For this challenge you will be printing a string in a particular zig-zag format. 544 solutions

• Off Binary

For this challenge you will be determining the correct binary number. 637 solutions

• Longest Consecutive

For this challenge you will compute the length of the longest consecutive subsequence. 1270 solutions

• String Expression

For this challenge you will convert a string of written numbers to an actual number. 250 solutions

• Charlie the Dog

For this challenge you will be helping a dog collect all the food in a grid. 820 solutions

• Plus Minus

For this challenge you will need to determine how to add or subtract numbers to end up with zero. 1080 solutions

• Primes

For this challenge you will be determining if an argument is a prime number. 437 solutions

• String Calculate

For this challenge you will be evaluating a mathematical expression within a string. 372 solutions

• Tree Constructor Two

For this challenge you will determine if an array of integer pairs can form a binary tree properly. 504 solutions

• Logit Regression

For this challenge you will be performing a simple logistic regression. 96 solutions