dailyalgorithm

CamelCase Method

algorithm

Instructions

Write simple .camelCase method (camel_case function in PHP, CamelCase in C# or camelCase in Java) for strings. All words must have their first letter capitalized without spaces.

For instance:

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camelCase("hello case"); // => "HelloCase"
camelCase("camel case word"); // => "CamelCaseWord"

My Solution

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import java.util.Arrays;
import java.util.stream.Collectors;

public class CamelCaseMethod {
    public static String camelCase(String str) {
        String camelCaseStr = Arrays.stream(str.trim().split(" "))
                .map(CamelCaseMethod::capitalize)
                .collect(Collectors.joining());

        return camelCaseStr;
    }

    public static String capitalize(String word) {
        if (word.length() == 0)
            return word;

        return Character.toUpperCase(word.charAt(0)) + word.substring(1);
    }

}

Better Solution

그다지 없었다…

Feeling

문제는 어렵지 않았는데 테스트 케이스에 아래와 같은 케이스가 포함되있어서 풀기가 은근히 까다로웠다.

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"ab  c"
" camel case word"
"say hello "

많이 풀어보면서 이런 케이스에 시간 뺐기지 않도록 하자

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