[자바스크립트로 구현한 알고리즘] Sum of the first nth term of Series

Description: 

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Task: 

Your task is to write a function which returns the sum of following series upto nth term(parameter).

Series: 1 + 1/4 + 1/7 + 1/10 + 1/13 + 1/16 +...

Rules:

·        You need to round the answer upto 2 decimal places and return it as String.

·        If the given value is 0 then it should return 0.00

·        You will only be given Natural Numbers as arguments.

 

Examples:

SeriesSum(1) => 1 = "1" 

SeriesSum(2) => 1 + 1/4 = "1.25"

SeriesSum(5) => 1 + 1/4 + 1/7 + 1/10 + 1/13 = "1.57"

필자답안

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자바스크립트에서는 toFixed를 통해 부동소수점을 나타낼 수 있습니다. 매개변수로 자릿수를 적용시킬 수 있습니다.

모범답안

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