ABC TO XYZ OF AI

Let’s walk through a proper problem-solving framework using the following method for each problem:

✅ Framework for Python Problem Solving

Step-by-Step Method:

1. Understand the Problem
2. Write Pseudocode or Draw Flow / Decision Tree
3. Select Patterns & Data Structures
4. Follow Template → Input → Logic → Output
5. Dry Run with Debug Print
6. Optimize if Needed

Let me now walk through 3 examples in this format. Once we are good and used with the format we will go for 15+ more.

✅ Example 1: Check if a String is a Palindrome

Problem: A string is a palindrome if it reads the same forwards and backwards.

1. Pseudocode / Flow:

- Take input string
- Reverse the string
- Compare original with reversed
- Return True/False

2. Decision Flow:

Input: "madam"
|
v
Check: "madam" == "madam"[::-1]
|
v
Yes -> Palindrome
No -> Not a Palindrome

3. Python Code:

def get_input():
    return input("Enter a string: ")

def process(data):
    # Logic to check palindrome
    return data == data[::-1]

def show_result(output):
    print("Palindrome?" , output)

def main():
    data = get_input()
    result = process(data)
    show_result(result)

main()

4. Dry Run:

Input: madam
data[::-1] = madam
Comparison: True

✅ Example 2: Count Characters (Use Hashmap)

1. Pseudocode:

- Take input string
- Create empty dict
- Loop through characters
    - If in dict: increment count
    - Else: set count = 1
- Return dict

2. Flow:

Input: "apple"
|
v
Loop: a, p, p, l, e
|
v
Output: {'a':1, 'p':2, 'l':1, 'e':1}

3. Python Code:

def get_input():
    return input("Enter a word: ")

def process(word):
    freq = {}
    for ch in word:
        freq[ch] = freq.get(ch, 0) + 1
    return freq

def show_result(output):
    print("Character Frequency:", output)

def main():
    data = get_input()
    result = process(data)
    show_result(result)

main()

✅ Example 3: Find Minimum in a List (Loop + Tracking)

1. Pseudocode:

- Take input list
- Initialize min_val = first element
- Loop through rest
    - if element < min_val → update min_val
- Return min_val

2. Flow:

Input: [4, 9, 1, 2]
|
v
Start with min_val = 4
Compare: 9 > 4 → skip
Compare: 1 < 4 → update min_val = 1
Compare: 2 > 1 → skip
|
v
Return 1

3. Python Code:

def get_input():
    return list(map(int, input("Enter numbers separated by space: ").split()))

def process(arr):
    min_val = arr[0]
    for num in arr[1:]:
        if num < min_val:
            min_val = num
    return min_val

def show_result(output):
    print("Minimum value:", output)

def main():
    data = get_input()
    result = process(data)
    show_result(result)

main()

✅ Want to Continue?

Let me know, and I’ll provide the next 15 problems following the same structure:

• ✅ Binary Search
• ✅ Sorting (Bubble/Merge/Quick)
• ✅ Consecutive Characters
• ✅ Longest Unique Substring
• ✅ Anagram Check
• ✅ Min Distance Between Duplicates
• ✅ Frequency Sort
• ✅ Matrix Diagonal Sum
• ✅ FizzBuzz
• ✅ Prime Number Check
• ✅ Count Words in Sentence
• ✅ Convert Roman to Integer
• ✅ Reverse a Linked List (or simulate)
• ✅ Bracket Balance Checker
• ✅ Sum of Digits

Pages: 1 2 3 4