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1. Check Anagram2. Check if Substring Exists3. Count Substring Occurrences4. Extract Numbers from String5. Sum of Numbers in String6. Check if All Characters Same7. Remove Adjacent Duplicates8. Find First Non-Repeating Character9. Find Most Frequent Character10. Check String Rotation11. Longest Common Prefix12. String Compression13. Valid Parentheses Check14. Reverse Words in String

Sum of Numbers in String

Calculate sum of all numbers in string.

AdvancedPhase 5 - Category 5: Advanced String LogicExample 5 of 14
sum-of-numbers-in-string.py
1# Take string input
2s = input("Enter a string: ")
3

4# Extract and sum numbers
5total = 0
6current_num = ""
7for char in s:
8    if char.isdigit():
9        current_num += char
10    else:
11        if current_num:
12            total += int(current_num)
13            current_num = ""
14if current_num:
15    total += int(current_num)
16

17print(f"Sum: {total}")

Output

Enter a string: Hello123World456
Sum: 579

What's going on

Extract numbers and accumulate sum.

Key Concepts:

Extract numbers from string
Convert to integers
Sum all numbers

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