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Given a String str and a character ch, return the number of times ch appears in str. For example, if str is "Hello" and ch is 'l', the...
X325: countChar
Given a String str and a character ch, return the number of times ch appears in str. For example, if str is "Hello" and ch is 'l', the value returned would be 2.
Examples:
countChar("Hello", 'l') -> 2
countChar("abcdefghijklmnop", 'q') -> 0
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