优化

08-coding-interview-prep/algorithms.json

@@ -11,7 +11,7 @@
         "知识提要：对称差 (Symmetric Difference)，数学上，两个 <a href='https://baike.baidu.com/item/%E9%9B%86%E5%90%88/2908117' target='_blank'>集合</a> 的对称差是只属于其中一个集合，而不属于另一个集合的元素组成的集合，例如：集合 A = { 1, 2, 3} 和 B = { 2, 3, 4} 的对称差为 A &xutri; B = C = {1,4},。 集合论中的这个运算相当于布尔逻辑中的异或运算。<a href='https://baike.baidu.com/item/%E5%AF%B9%E7%A7%B0%E5%B7%AE' target='_blank'>百科</a>。",
         "创建一个函数sym，输入两个或两个以上的数组作为参数，然后返回值为 **对称差** 的数组",
         "思路：设定两个数组 (例如：<code>A = {1, 2, 3}</code>，<code>B = {2, 3, 4}</code>，)作为参数传入，返回对称差数组（<code>A &xutri; B = C = {1, 4}</code>），且数组元素具有唯一性（没有重复项）。",
-        "如果你遇到了难题，请点击 <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>帮助</a>。请尽量编写属于你自己的代码。尝试一下 **结对编程** 会有意料不到的惊喜哦。",
+        "如果你遇到了困难，请点击 <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>帮助</a>。请尽量编写属于你自己的代码。尝试一下 **结对编程** 会有意料不到的惊喜哦。",
       ],
       "solutions": [
         "function sym() {\n  var arrays = [].slice.call(arguments);\n  return arrays.reduce(function (symDiff, arr) {\n    return symDiff.concat(arr).filter(function (val, idx, theArr) {\n      return theArr.indexOf(val) === idx \n        && (symDiff.indexOf(val) === -1 || arr.indexOf(val) === -1);\n    });\n  });\n}\nsym([1, 2, 3], [5, 2, 1, 4]);\n"
@@ -101,7 +101,7 @@
       "title": "Inventory Update",
       "description": [
         "Compare and update the inventory stored in a 2D array against a second 2D array of a fresh delivery. Update the current existing inventory item quantities (in <code>arr1</code>). If an item cannot be found, add the new item and quantity into the inventory array. The returned inventory array should be in alphabetical order by item.",
-        "Remember to use <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>Read-Search-Ask</a> if you get stuck. Try to pair program. Write your own code."
+        "如果你遇到了困难，请点击 <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514' target='_blank'>帮助</a>。请尽量编写属于你自己的代码。尝试一下 **结对编程** 会有意料不到的惊喜哦。",
       ],
       "solutions": [
         "function updateInventory(arr1, arr2) {\n  arr2.forEach(function(item) {\n    createOrUpdate(arr1, item);\n  });\n  // All inventory must be accounted for or you're fired!\n  return arr1;\n}\n\nfunction createOrUpdate(arr1, item) {\n  var index = -1;\n  while (++index < arr1.length) {\n    if (arr1[index][1] === item[1]) {\n      arr1[index][0] += item[0];\n      return;\n    }\n    if (arr1[index][1] > item[1]) {\n      break;\n    }\n  }\n  arr1.splice(index, 0, item);\n}\n\n// Example inventory lists\nvar curInv = [\n    [21, 'Bowling Ball'],\n    [2, 'Dirty Sock'],\n    [1, 'Hair Pin'],\n    [5, 'Microphone']\n];\n\nvar newInv = [\n    [2, 'Hair Pin'],\n    [3, 'Half-Eaten Apple'],\n    [67, 'Bowling Ball'],\n    [7, 'Toothpaste']\n];\n\nupdateInventory(curInv, newInv);\n"