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Tag: loops

C program to check whether a number is perfect number or not

Posted on December 18, 2023 By thecodepathshala No Comments on C program to check whether a number is perfect number or not

Example Input Input any number: 6 Output 6 is PERFECT NUMBER Perfect number is a positive integer which is equal to the sum of its proper positive divisors.For example: 6 is the first perfect numberProper divisors of 6 are 1, 2, 3Sum of its proper divisors = 1 + 2 + 3 = 6.Hence 6 is…

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C Programming, Programming

C program to find Armstrong numbers between 1 to n

Posted on December 18, 2023December 18, 2023 By thecodepathshala 3 Comments on C program to find Armstrong numbers between 1 to n

Example Input Enter lower limit: 1 Enter upper limit: 1000 Output Armstrong number between 1 to 1000 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 370, 371, 407 An Armstrong number is a n-digit number that is equal to the sum of nth power of its digits. For example,6 = 61 = 6371 = 33 + 73 + 13 = 371 Program…

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C Programming, Programming

C program to check whether a number is armstrong number or not

Posted on December 18, 2023December 18, 2023 By thecodepathshala No Comments on C program to check whether a number is armstrong number or not

Example Input Input number: 371 Output 371 is armstrong number An Armstrong number is a n-digit number that is equal to the sum of the nth power of its digits. For example –6 = 61 = 6371 = 33 + 73 + 13 = 371

C Programming, Programming

C program to find prime factors of a number

Posted on December 18, 2023December 18, 2023 By thecodepathshala No Comments on C program to find prime factors of a number

Example Input Input any number: 10 Output Prime factors of 10: 2, 5

C Programming, Programming

C program to print all prime numbers between 1 to n

Posted on December 18, 2023December 18, 2023 By thecodepathshala 1 Comment on C program to print all prime numbers between 1 to n

Example Input Input lower limit: 1 Input upper limit: 20 Output Prime numbers between 1-20: 2, 3, 5, 7, 13, 17, 19 Program to print prime numbers in given range

C Programming, Programming

C program to check whether a number is prime number or not

Posted on December 18, 2023December 18, 2023 By thecodepathshala No Comments on C program to check whether a number is prime number or not

Example Input Input any number: 17 Output 17 is prime number Prime numbers are the positive integers greater than 1 that is only divisible by 1 and self. For example: 2, 3, 5, 7, 11 etc…

C Programming, Programming

C program to find LCM of two numbers

Posted on December 18, 2023 By thecodepathshala No Comments on C program to find LCM of two numbers

Example Input Input number1: 12 Input number2: 30 Output LCM = 60 LCM is a smallest positive integer that exactly divides two or more numbers. For Example

C Programming, Programming

C program to find HCF (GCD) of two numbers

Posted on December 18, 2023December 18, 2023 By thecodepathshala No Comments on C program to find HCF (GCD) of two numbers

Example Input Input first number: 12 Input second number: 30 Output HCF of 12 and 30: 6 HCF (Highest Common Factor) is the greatest number that divides exactly two or more numbers. HCF is also known as GCD (Greatest Common Divisor) or GCF (Greatest Common Factor).

C Programming, Programming

C program to find factorial of a number

Posted on December 18, 2023 By thecodepathshala No Comments on C program to find factorial of a number

Example Input Input number: 5 Output Factorial: 120

C Programming, Programming

C program to find all factors of a number

Posted on December 18, 2023December 18, 2023 By thecodepathshala 1 Comment on C program to find all factors of a number

Example Input Input number: 12 Output Factors of 12: 1, 2, 3, 4, 6, 12

C Programming, Programming

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🔥 C++ STL IN 30 MINUTES — Complete Introduction for DSA & Coding Interviews!

Confused about C++ STL while solving DSA and LeetCode problems? In this video, we’ll understand the Standard Template Library (STL) from scratch and learn the most important concepts you actually need for competitive programming, DSA, placements and coding interviews.

Instead of spending hours learning STL, this 30-minute C++ STL crash course gives you a practical overview of the most important STL components with examples and complexity.

🚀 What You'll Learn

✅ What is C++ STL?
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✅ STL Containers
✅ Vector
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✅ Stack
✅ Queue
✅ Priority Queue
✅ Set
✅ Map
✅ Unordered Map / Set
✅ Iterators
✅ Important STL Algorithms
✅ sort()
✅ reverse()
✅ find()
✅ binary_search()
✅ lower_bound()
✅ upper_bound()
✅ min() / max()
✅ Time Complexity of important STL operations
✅ How STL helps in LeetCode & Coding Interviews

💡 Why Should You Learn STL?

If you're preparing for:

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🔥 Coding Interviews
🔥 DSA Placements
🔥 Competitive Programming
🔥 Amazon / Microsoft / Google / Meta Interviews
🔥 C++ Programming

then knowing STL can significantly reduce the amount of code you need to write and help you focus on the actual problem-solving logic.

By the end of this video, you should have a clear roadmap of which C++ STL containers, functions and algorithms you need to learn for DSA.

👉 Subscribe to TheCodePathshala for practical DSA, C++, LeetCode and System Design videos.

👍 Like the video if this STL crash course helped you!

💬 Comment below: Which STL topic confuses you the most?

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C++ STL IN 30 MINUTES 🔥 | Complete STL Introduction for DSA & Interviews
Important!!
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🚀 LeetCode #1 – Two Sum Explained in Under 2 Minutes!
Learn the most asked coding interview problem using the Hash Map approach and understand why it runs in O(n) time instead of O(n²).
In this Short, you'll learn:
✅ Problem statement
✅ Optimized Hash Map approach
✅ Step-by-step dry run
✅ Time & Space Complexity
✅ Interview tips
If you're preparing for FAANG, Microsoft, Amazon, Google, or any software engineering interview, this series is for you.
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