Jitendra Kumar’s Post

This problem explores how list comprehensions can both filter and transform data in a single line. The condition selects specific elements from the list, and the expression then applies an operation to those selected values. Understanding this helps write cleaner and more Pythonic code. THE ANSWER IS; (B) #Python #ListComprehension #PythonChallenge #LearningInPublic #CodingJourney

This challenge shows how list comprehensions can iterate through nested structures. The order of iteration matters here. Python processes the outer loop first and then the inner loop, flattening the structure step by step. This concept is widely used when working with matrices or nested lists. THE ANSWER IS: B #Python #NestedLoops #PythonChallenge #ProblemSolving #LearningInPublic

LeetCode | Squares of a Sorted Array 🔢 🔹 Approaches: • Two Pointers (Optimal) • Square + Sort 🔹 Time Complexity: O(n) optimal / O(n log n) sorting 🔹 Space Complexity: O(n) Daily DSA practice to improve logic and consistency 🚀 “We compare absolute values from both ends to build the sorted squares efficiently.” #LeetCode #DSA #Arrays #TwoPointers #Python #CodingJourney #LearningInPublic 

LeetCode #230 – Kth Smallest Element in a BST | Python Implementation I implemented an iterative inorder traversal using a stack to find the kth smallest element without building the entire sorted list. Core Insight: Iterative inorder traversal with early termination avoids O(n) space for storing all values. The stack simulates recursion while the counter enables stopping exactly at k. Time: O(h + k) where h = tree height | Space: O(h) for stack #LeetCode #DataStructures #Python #BinarySearchTree #InorderTraversal #Stack #CodingInterview #SoftwareEngineering

LeetCode 796 | Rotate String 🔁 🔹 Concept: String Rotation 🔹 Trick: Check if goal is substring of s + s 🔹 Time Complexity: O(n) All rotations of a string exist inside its doubled version 💡 Simple idea, powerful pattern. #LeetCode #DSA #StringManipulation #Python #CodingPractice #ProblemSolving

LeetCode | Largest Odd Number in String 🔢 🔹 Approach: Reverse traversal 🔹 Key idea: Find the rightmost odd digit and return prefix 🔹 Time Complexity: O(n) 🔹 Space Complexity: O(1) Daily DSA practice to improve problem-solving skills 🚀 #LeetCode #DSA #Strings #Python #CodingJourney #LearningInPublic

LeetCode | Find Numbers with Even Number of Digits 🔢 🔹 Approaches: • Digit counting using division • String length conversion 🔹 Time Complexity: O(n) 🔹 Space Complexity: O(1) Daily DSA practice to improve logic and consistency 🚀 “We count digits either mathematically or using string length, then check if it’s even.” #LeetCode #DSA #Arrays #Python #CodingJourney #LearningInPublic 

Need fast lookups in a sorted list? Binary search cuts the search space in half each step, making it O(log n). This iterative version returns the index if found, or -1 if not—perfect for quick, deterministic searching.#BinarySearch #Python #Algorithms #DataStructures

Need a fast-to-write search that works on any list? Linear search checks each item one by one and returns the first matching index (or -1 if it’s not there). Perfect for unsorted arrays and quick lookups in small datasets.#Algorithms #DataStructures #Python #Coding

feb-22-26 LeetCode 762 – Prime Number of Set Bits in Binary Representation Solved today’s problem! ✅ The task is to count numbers in a given range [left, right] whose number of set bits (1s in binary form) is a prime number. ⚡ Complexity: Time: O(n log n) Space: O(1) A simple yet powerful problem combining binary operations and number theory 🔥 #LeetCode #DailyCoding #BitManipulation #Python #ProblemSolving #CodingJourney