Top Python DSA Questions for Fresher Interviews

💡 Top Python DSA Questions Every Fresher Must Know (With Answers) If you're preparing for interviews, these are 🔥 frequently asked problems in companies like product & service-based firms. 1️⃣ Two Sum Problem 👉 Find two numbers that add up to a target def two_sum(nums, target): seen = {} for i, num in enumerate(nums): diff = target - num if diff in seen: return [seen[diff], i] seen[num] = i print(two_sum([2,7,11,15], 9)) # Output: [0,1] 2️⃣ Reverse a String 👉 Very common basic logic question def reverse_string(s): return s[::-1] print(reverse_string("hello")) # olleh 3️⃣ Check Palindrome 👉 Asked in almost every interview def is_palindrome(s): return s == s[::-1] print(is_palindrome("madam")) # True 4️⃣ Find Maximum Subarray (Kadane’s Algorithm) 👉 Important for problem-solving rounds def max_subarray(nums): max_sum = nums[0] current = nums[0] for num in nums[1:]: current = max(num, current + num) max_sum = max(max_sum, current) return max_sum print(max_subarray([-2,1,-3,4,-1,2,1,-5,4])) # 6 5️⃣ Count Frequency of Elements 👉 Useful in real-world data problems from collections import Counter def count_freq(arr): return Counter(arr) print(count_freq([1,2,2,3,3,3])) 📊 Why these matter? ✔ Covers arrays, hashing, strings ✔ Builds problem-solving mindset ✔ Frequently asked in interviews 🔥 Pro Tip: Don’t just memorize — understand the logic & try variations! 📌 I’ll be sharing more DSA + AWS + Real-world problems. Follow for updates! #Python #DSA #CodingInterview #Freshers #SoftwareJobs #LearnToCode #PlacementPrep

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