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step2_1 다각형의 넓이 구현 #52

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Merged
crongro merged 1 commit into from
Apr 8, 2019
Merged

step2_1 다각형의 넓이 구현 #52

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48 changes: 48 additions & 0 deletions STEP2_1.js
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const {PI} = Math
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@crongro crongro Apr 8, 2019

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오 ! 디스트럭츄링~

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@crongro crongro Apr 8, 2019

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pow는 왜 안했어요?


function checkType(arr) {
for (let i = 0; i < arr.length; i++) {
if (typeof(arr[i]) !== "number") {
throw "please input Number data type";
}
}
}

function checkArgumentCount(arr, correctCount) {
if (arr.length !== correctCount) {
throw "please input correct number of arguments"
}
}

function circleArea(r) {
checkArgumentCount(arguments, 1);
checkType(arguments);

return PI * Math.pow(r, 2)
}

function squareArea(width, height) {
checkArgumentCount(arguments, 2);
checkType(arguments);

return width * height;
}

function trapezoidArea(x1, x2, h) {
checkArgumentCount(arguments, 3);
checkType(arguments);

return (x1 + x2) * h / 2
}

function cylinderArea(r, h) {
checkArgumentCount(arguments, 2);
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@crongro crongro Apr 8, 2019

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이런방법이 어색하지만, 요구사항에는 맞는 방법이에요~!

checkType(arguments);

return (2 * PI * Math.pow(r, 2)) + 2 * PI * r * h
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@crongro crongro Apr 8, 2019

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circleArea를 재사용할 수 있다면 더 좋을 듯.

}

console.log(circleArea(3));
console.log(squareArea(2, 7));
console.log(trapezoidArea(6, 3, 3));
console.log(cylinderArea(4, 6));