Min Lowercase

Difficulty: ⚫◯◯◯

Tags: array, ascii, characters

Hurdle: Passing this question is sufficient to pass the arrays hurdle.

Description

Write a function min_lowercase that will be passed a character array with exactly size elements. The function should return the lowercase letter with the lowest ASCII value.

Examples

Example 1

Input:  {'c', 'A', 'e', 'P', '!'}
Output: 'c'

Explanation: The lowercase letters are 'c' and 'e'. Since 'c' has a lower ASCII value than 'e', return 'c'.

Example 2

Input:  {'O', '@', 'g'}
Output: 'g'

Explanation: The only lowercase letter is 'g', so return 'g'.

Example 3

Input:  {'z', 'a', 'b'}
Output: 'a'

Explanation: All letters are lowercase. 'a' has the lowest ASCII value (97), so return 'a'.

Function Signature

char min_lowercase(int size, char array[MAX_COLS]);

Constraints

• You can assume that the array has at least 1 lowercase letter.
• You can assume that the array will have at most 100 characters.
• min_lowercase should not modify the array it is provided.
• min_lowercase should not call scanf, getchar, or fgets.
• min_lowercase should not print anything (do not call printf).

Hints

• Lowercase letters in ASCII range from 'a' (97) to 'z' (122).
• You can check if a character is lowercase using: c >= 'a' && c <= 'z'.

Testing

./min-lowercase cAeP!
c

./min-lowercase O@g
g

./min-lowercase zab
a