Alternate Case Converter

Easy

string case-conversion alternation character-processing

Problem Description

Convert a string so that every alternate character is uppercase, starting with the first character as uppercase. Non-alphabetic characters are ignored for the alternation but remain in their positions.

Input Format

A single string containing letters, numbers, and special characters.

Output Format

String with alternating case applied to alphabetic characters only.

Constraints

• 1 ≤ string length ≤ 1000

• Only alphabetic characters change case

• First alphabetic character becomes uppercase

• Non-alphabetic characters don't affect alternation

• Preserve original spacing and punctuation

Sample Input/Output

Input:

coding

Output:

CoDiNg

Explanation

Alternating case: c→C (1st), o→o (2nd), d→D (3rd), i→i (4th), n→N (5th), g→g (6th). Result: "CoDiNg".

Solution Hints

40
Points

1000ms
Time Limit

64MB
Memory Limit

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