Get hot problems

Author: pluveto

FetchList.js

@@ -0,0 +1,86 @@
+// https://codetop.cc/api/questions/?page=${N}&search=&ordering=-frequency
+
+let genUrl = (N) => {
+    return `https://codetop.cc/api/questions/?page=${N}&search=&ordering=-frequency`
+}
+
+let pageRange = {min: 1, max: 50}
+
+let fetchPage = (N) => {
+    let url = genUrl(N)
+    console.log(`Fetching ${url}...`);
+    return fetch(url).then(r => r.json())
+}
+
+let fetchAllPages = (range) => {
+    let queryPeriod = 1000
+    let promises = []
+    for (let i = range.min; i <= range.max; i++) {
+        promises.push(fetchPage(i))
+    }
+    return Promise.all(promises)
+}
+
+let fetchAllQuestions = () => {
+    return fetchAllPages(pageRange).then(pages => {
+        let questions = []
+        for (let page of pages) {
+            console.log("Page: ", page);
+            questions = questions.concat(page.list)
+        }
+        return questions
+    })
+}
+
+/**
+ * Response format:
+ * {
+ *  count,
+ *  list {
+ *    id,
+ *    value,
+ *    leetcode? {
+ *      id,
+ *      title
+ *    }
+ *  }
+ * }
+ */
+
+// Generate a list of {leet_id, value, title}
+let genList = (questions) => {
+    let list = []
+    for (let q of questions) {
+        let leetcode = q.leetcode
+        if (leetcode) {
+            let id = leetcode.id
+            let title = leetcode.title
+            let value = q.value
+            list.push({id, value, title})
+        }
+    }
+    return list
+}
+
+// Sort the list by value
+let sortList = (list) => {
+    return list.sort((a, b) => {
+        return b.value - a.value
+    })
+}
+
+// Print to console
+let printList = (list) => {
+    let out = ""
+    for (let {id, value, title} of list) {
+        out += `${id},${value},${title}\n`
+    }
+    console.log(out)
+}
+
+// Main
+fetchAllQuestions().then(questions => {
+    let list = genList(questions)
+    let sortedList = sortList(list)
+    printList(sortedList)
+})