Python for Patterns, Problems, Data Structures & Algorithms

Learn to print a right angled triangle pattern of stars in Python by taking user input for rows and using a for loop with range to print incremental stars.

Learn to generate an inverted rectangle triangle pattern in Python by taking a user input for rows, using a reverse loop to print decreasing stars.

Learn to print an inverted reverse right angle triangle pattern with Python by taking user input, looping with a reverse range, and printing spaces and stars to form the pattern.

See how to print an equilateral triangle pattern in Python by aligning spaces and stars with a range-based loop and user input.

Learn to print an inverted equilateral triangle pattern in Python by taking a user-supplied number of rows, computing leading spaces and stars, and producing the pattern.

Learn to print a left base equilateral triangle pattern in Python by constructing the upper and lower halves with range-based loops, using user input for rows and star characters.

Learn to print a hollow triangle pattern in Python by using nested loops, handling user input for rows, and producing the hollow form.

Master Python loops to print a hollow inverted triangle pattern, using user input for rows and careful row and column logic to place stars along the pattern's edges.

Learn to print a string in a right-angle triangle pattern with Python by iterating with range, using slicing to control characters, and handling zero-based indexing and string length.

Learn to print a left-base equilateral triangle pattern in Python by combining upper and lower halves, using loops, index slicing, and user input to build the full figure.

Learn to print a solid square pattern in Python using user input for rows, with range logic to include the last value and optional spaces between stars.

Learn to print a sliced square pattern in Python by combining a right-angled triangle pattern with an inverted triangle, using for loops, range, and user input.

Learn to print a hollow square with two diagonals using indices starting at zero, taking row and column input, and printing stars at borders and diagonals while leaving spaces inside.

Generate a parallelogram pattern in Python by taking a user-defined number of rows and printing six stars per row with decreasing leading spaces.

Learn to generate numerical right angle triangle patterns in Python using nested for loops and range, controlling start values and line breaks to print increasing numbers across rows.

Learn to print a diamond pattern in Python by building the upper and lower halves with loops, spaces, and stars, including input handling and equilateral adjustments.

Learn how to print multiple diamonds in Python by defining a function that prints a single diamond and uses user input to determine how many diamonds to display.

Learn to print a hollow diamond pattern in python by iterating seven rows and seven columns with range-based loops, applying conditions to print stars and spaces.

Learn to print a butterfly pattern in Python by splitting the design into upper and lower halves using user-entered rows, with spaces and stars.

Learn to print a heart shaped pattern in Python using nested for loops over six rows and seven columns, with conditions to print stars and spaces in the correct positions.

Learn to print the alphabet A as a Python pattern using nested loops and conditional logic with range-based rows and columns, printing stars and spaces to form the letter.

Learn to print the Alphabet B pattern in Python by using nested for loops over rows and columns, conditional star placement, and optional list inputs to build the pattern.

Print an X shaped pattern in Python using nested loops over 0 to num-1, taking user input for num, and placing stars when row==col or row+col==num-1, else spaces.

this lecture shows printing numbers in an x shaped pattern in python using nested loops and the condition row equals column or row plus column equals n plus one.

Learn three ways to swap two variables: using a temporary variable, using arithmetic without a temp, and Python's tuple assignment shortcut. See these methods demonstrated with simple values.

Explore how to swap keys and values in a dictionary using a dictionary comprehension, including keys, values, and items, and a one-liner to invert the mapping.

Reverse a string in python using a for loop or the slicing trick, with examples showing input handling and printing the reversed result.

Find the roots of a quadratic equation using the quadratic formula with a Python function roots(a, b, c) that yields two roots, like 2 and 6 for a=1, b=-8, c=12.

Learn to reverse lists in Python using the built-in reverse method and by manual iteration with range and indexing, illustrating in-place changes and building a reversed list.

Learn to reverse a list without built-in methods by defining a length function and a reverse_list function, then fill a none-initialized, pre-sized result from the end.

Learn how to reverse a list in Python with the two-pointers method, swapping left and right elements inside a while loop.

Write and run a coin tossing program in Python by importing the random module, generating a random 0 or 1, and printing heads or tails based on the result.

Learn to compute factorials in Python using both a for loop and recursion, with step-by-step input handling, range concepts, base cases, and recursive multiplication.

Extend a simple calculator program by adding a continuous loop that runs until the user quits, normalizing input, validating operators, and displaying a closing thank you message.

Learn to write a python palindrome program that takes a word input, builds its reverse by iterating letters (and later via slicing), and prints whether the word is a palindrome.

Learn to implement a Python program that detects Armstrong numbers by summing each digit raised to the number’s length, using a function and user input.

Learn to count the occurrence of each vowel in a string using a dictionary, starting from zero, with input handling and iteration to display the vowel tally.

Count the occurrence of each number in a list using a Python program, returning a dictionary with numbers as keys and their counts as values via a counter function.

Explore a Python class with methods to find the maximum and minimum in a list by iterating and updating based on comparisons, returning the extreme values.

Learn to write a Python program to find the minimum and maximum values and their keys from a dictionary by a class with min and max methods.

Write a Python program to extract numbers and alphabets from a string by iterating characters, converting digits to integers, and collecting alphabetic characters into separate lists.

Learn to split a list of sublists into even and odd numbers using Python loops, building an even list, an odd list, and an output list for clear results.

Learn how to remove duplicate numbers from a list using a manual approach with a seen list and a conditional append, then optimize with set conversion and back to list.

Learn how to separate integers, floats, and complex numbers from a mixed Python list using the type method and the instance method, with example outputs and printing the distinct lists.

Compute the zero, positive, and negative percentages in a list with a Python function that returns a dictionary of zero_percentage, positive_percentage, and negative_percentage.

Learn to build a Python timer program that counts hours, minutes, and seconds using nested for loops and sleep, with optional clear output in Jupyter notebooks.

Learn how matrix addition works by adding A = [[1,3],[5,2]] and B = [[5,4],[6,3]] to get A+B = [[6,7],[11,5]]; addition requires the same dimensions, and subtraction follows the same rule.

Learn to implement matrix addition in Python by validating dimensions, iterating with nested loops, and returning a nested result while handling unequal shapes with a clear error message.

Explore matrix multiplication with two 2x2 matrices A and B, showing row–column multiplications and sums to obtain a 2x2 result and the compatibility rule for differing dimensions.

Explore python matrix multiplication by building matrix_multiplication, validating dimensions, initializing a P by Q result, and computing via a triple loop with error handling for incompatibility.

Build a Python student database that stores names and marks in a dictionary, uses a for loop for data entry and a while loop for querying, returning -1 if missing.

Build a Python guessing game that selects a secret number from 1 to 200 using random, prompts user for 10 tries with clues higher or lower, and handles out-of-range input.

Create a Python program for three cup monte, shuffle cups with random.shuffle, prompt the player to pick a cup, reveal win or lose, and print the cup layout.

Learn to build a Python banking program with a Bank class offering deposit, withdraw, and balance inquiry, a starting balance, and a looped prompt using d, w, b, and q.

Learn to implement a stack in Python, a last-in, first-out data structure, with push and pop operations and methods like is_empty, peek, size, and display.

Implement a Python queue using a list, with enqueue, dequeue, peek, size, and display operations to enforce first-in, first-out order.

Implement a deck data structure in Python, showing a class-based approach with add_front, add_rear, remove_front, remove_rear, front, rear, is_empty, size, and display.

Learn to implement a linear search algorithm in Python, writing a function that scans a list to return a key’s index or not in list, and collect indices for repeats.

Learn to implement binary search on a sorted list, using lower, higher, and middle indices with floor division to locate a key or handle not-found cases.

This lecture presents a tiny update to the binary search program, adjusting the middle-value equality case to return found and ensuring the loop ends correctly when not found.

Implement the bubble sort algorithm in Python to sort a list by swapping adjacent elements. Analyze the required iterations and swaps, and print the unsorted and sorted lists.

Implement a rock, paper, and scissor game in Python by importing random.choice, creating a choices list containing rock, paper, and scissor, selecting computer and player moves, and evaluating outcomes with conditional logic.

Enhance the rock, paper, scissors game by adding play count input, tracking player and computer scores, running a loop until count reaches zero, and declaring the series winner.