Solve : reduceNameNickname

Author: raccoon-ccoder

Challenge/jybaek96/reduceSum/README.md

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+# 문제제목
+
+## 설명
+
+reduce 메소드를 사용해서 배열의 모든 수의 합을 구하세요.
+
+## Expected Output 
+
+106

Challenge/jybaek96/reduceSum/solve.js

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+// write your codes
+function solution(inputArray) {
+    return inputArray.reduce((pre, acc) => pre + acc, 0);
+}
+exports.solution = solution;

Challenge/jybaek96/reduceSum/solve.test.js

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+const { solution } = require('./solve');
+
+const test1 = {
+  input: [10, 3, 20, 5, 8, 60],
+  answer: 106,
+};
+
+describe('reduceSum', () => {
+  test('test1', () => {
+    expect(solution(test1.input)).toEqual(test1.answer);
+  });
+});

Challenge/jybaek96/sortByPrice/README.md

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+# 문제제목
+
+## 설명
+
+배열안의 객체를 price를 기준으로 오름차순 정렬한 배열을 출력하세요
+
+## Expected Output 
+
+[
+  { name: '사과', price: 1000 },
+  { name: '당근', price: 2000 },
+  { name: '수박', price: 5000 },
+  { name: '참외', price: 10000 }
+]

Challenge/jybaek96/sortByPrice/solve.js

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+// write your codes
+function solution(inputArray) {
+    return inputArray.sort((a,b) => a.price - b.price);
+}
+
+exports.solution = solution;

Challenge/jybaek96/sortByPrice/solve.test.js

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+const { solution } = require('./solve');
+
+const test1 = {
+  input: [
+    {
+      name: '사과',
+      price: 1000,
+    },
+    {
+      name: '수박',
+      price: 5000,
+    },
+    {
+      name: '당근',
+      price: 2000,
+    },
+    {
+      name: '참외',
+      price: 10000,
+    },
+  ],
+  answer: [
+    { name: '사과', price: 1000 },
+    { name: '당근', price: 2000 },
+    { name: '수박', price: 5000 },
+    { name: '참외', price: 10000 },
+  ],
+};
+
+describe('sortByPrice', () => {
+  test('test1', () => {
+    expect(solution(test1.input)).toEqual(test1.answer);
+  });
+});

Challenge/jybaek96/sortByPriceAndQuantity/README.md

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+# 문제제목
+
+## 설명
+
+배열안의 객체를 price를 기준으로 오름차순 정렬한 배열을 출력하세요
+만약 price가 같다면 quantity기준으로 오름차순 정렬하세요
+
+## Expected Output 
+
+[
+  { name: '사과', price: 1000, quantity: 2 },
+  { name: '오이', price: 2000, quantity: 49 },
+  { name: '당근', price: 2000, quantity: 50 },
+  { name: '참외', price: 5000, quantity: 10 },
+  { name: '수박', price: 5000, quantity: 20 }
+]

Challenge/jybaek96/sortByPriceAndQuantity/solve.js

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+// write your codes
+function solution(inputArray) {
+    return inputArray.sort((a,b) => {
+        if(a.price === b.price){
+            return a.quantity - b.quantity;
+        }
+        return a.price - b.price;
+    });
+}
+
+exports.solution = solution;

Challenge/jybaek96/sortByPriceAndQuantity/solve.test.js

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+const { solution } = require('./solve');
+
+const test1 = {
+  input: [
+    {
+      name: '사과',
+      price: 1000,
+      quantity: 2,
+    },
+    {
+      name: '수박',
+      price: 5000,
+      quantity: 20,
+    },
+    {
+      name: '당근',
+      price: 2000,
+      quantity: 50,
+    },
+    {
+      name: '참외',
+      price: 5000,
+      quantity: 10,
+    },
+    {
+      name: '오이',
+      price: 2000,
+      quantity: 49,
+    },
+  ],
+  answer: [
+    { name: '사과', price: 1000, quantity: 2 },
+    { name: '오이', price: 2000, quantity: 49 },
+    { name: '당근', price: 2000, quantity: 50 },
+    { name: '참외', price: 5000, quantity: 10 },
+    { name: '수박', price: 5000, quantity: 20 },
+  ],
+};
+
+describe('sortByPriceAndQuantity', () => {
+  test('test1', () => {
+    expect(solution(test1.input)).toEqual(test1.answer);
+  });
+});