LeetCode Question #8:String to Integer(atoi)|java|
LeetCode Question #8: String to Integer (atoi) | Java Solution Explained
In this video, we'll solve LeetCode Problem #8 – String to Integer (atoi) using Java with a clear, step-by-step explanation. This is one of the most frequently asked string parsing problems in coding interviews and helps you understand input processing, overflow handling, and edge cases.
📖 Problem Statement
Implement the myAtoi(String s) function that converts a string into a 32-bit signed integer.
The algorithm should:
Ignore leading whitespaces.
Determine the sign (+ or -).
Read digits until a non-digit character is encountered.
Ignore leading zeros.
Handle integer overflow by returning:
Integer.MAX_VALUE (2³¹ - 1) if overflow occurs.
Integer.MIN_VALUE (-2³¹) if underflow occurs.
📌 In this video, you'll learn:
✅ Understanding the atoi algorithm
✅ Handling leading whitespaces
✅ Processing positive & negative numbers
✅ Ignoring leading zeros
✅ Detecting invalid input
✅ Overflow & Underflow handling
✅ Java Implementation Explained
✅ Time & Space Complexity Analysis
✅ Interview Tips & Common Mistakes
📚 Examples Covered
"42" → 42
" -042" → -42
"1337c0d3" → 1337
"0-1" → 0
"words and 987" → 0
⏱ Complexity
Time Complexity: O(n)
Space Complexity: O(1)
This problem is commonly asked in interviews at top product-based companies like Amazon, Google, Microsoft, Adobe, Uber, Walmart, Oracle, and Flipkart.
🎯 LeetCode in Java Playlist
Learn LeetCode problems from Easy to Hard with simple Java explanations, dry runs, optimized solutions, and interview-focused techniques.
👍 If you found this video helpful:
Like 👍
Share 📤
Subscribe 🔔
Comment your doubts or your approach!
#LeetCode #LeetCode8 #StringToInteger #Atoi #Java #DSA #Algorithms #CodingInterview #InterviewPreparation #JavaProgramming #PlacementPreparation #Programming #SoftwareEngineer #EngineeringAhTherinjiko #Coding #tamil
Sur cette page du site, vous pouvez voir la vidéo en ligne LeetCode Question #8:String to Integer(atoi)|java| durée heure minute seconde en bonne qualité , qui a été Téléchargé par l'utilisateur Engineering Ah Therinjiko 28 juin 2026, Partagez le lien avec vos amis et connaissances, sur youtube cette vidéo a déjà été regardée 39 fois et il a aimé 1 téléspectateurs. Bon visionnage!
