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增加了列表/字典相关的习题集
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‎04-list-dict/answer-questions.ipynb‎

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 智能排序机器人\n",
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"* 现有一些产品的销售额\n",
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"```\n",
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" sales = [100,200,50,300,20,500,1000,10]\n",
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"```\n",
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"* 请对 sales 进行升序排序，并且打印出来\n",
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"* 请对 sales 进行降序排序，并且打印出来\n",
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"* 请用排序+切片的方式，找出 Top3 的销售额\n",
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"* 请用排序+切片的方式，找出 最低的3个销售额"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 45,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2020-07-14T06:25:24.784219Z",
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"start_time": "2020-07-14T06:25:24.777871Z"
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}
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"进行升序排序\n",
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"[20, 50, 100, 200, 300, 500]\n",
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"----------------------------------------------------------------------\n",
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"进行降序排序\n",
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"[500, 300, 200, 100, 50, 20]\n",
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"----------------------------------------------------------------------\n",
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"查看最后3个数据(top3)\n",
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"[200, 300, 500]\n",
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"----------------------------------------------------------------------\n",
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"查看最前3个数据( 最低的3个销售额)\n",
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"[20, 50, 100]\n"
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]
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}
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],
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"source": [
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"sales = [100,200,50,300,20,500]\n",
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"print(\"进行升序排序\")\n",
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"sales.sort() #\n",
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"print(sales)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"进行降序排序\")\n",
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"sales.sort(reverse= True) #进行降序排序\n",
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"print(sales)\n",
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"print(\"-\"*70)\n",
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"\n",
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"sales.sort() #进行升序排序\n",
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"print(\"查看最后3个数据(top3)\")\n",
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"print(sales[-3:]) \n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"查看最前3个数据( 最低的3个销售额)\")\n",
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"print(sales[:3]) \n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 车位管理机器人\n",
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"* 你现有管理一个停车场\n",
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"* 现有一组车位租用情况，结构如下：\n",
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"```\n",
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" car_nums = ['A0001','A00X9','A0027'] \n",
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"```\n",
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"* 现有新来了一辆车 'A0030', 请把它放在 car_nums 的最后面\n",
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"* 现有新来了一辆车 'A0000', 请把它放在 car_nums 的最前面\n",
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"* 'A00X9' 这辆车现在不租你的停车位上，请把它从 car_nums 中删掉\n",
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"* 现在来了一个车队 ['B0001','B0002','B003'], 请用一行代码把它加到 car_nums 中"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 44,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2020-07-14T06:24:57.511394Z",
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"start_time": "2020-07-14T06:24:57.505613Z"
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}
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"现有新来了一辆车 'A0030', 请把它放在 car_nums 的最后面\n",
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"['A0001', 'A00X9', 'A0027', 'A0030']\n",
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"----------------------------------------------------------------------\n",
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"现有新来了一辆车 'A0000', 请把它放在 car_nums 的最前面\n",
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"['A0000', 'A0001', 'A00X9', 'A0027', 'A0030']\n",
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"----------------------------------------------------------------------\n",
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"'A00X9' 这辆车现在不租你的停车位上，请把它从 car_nums 中删掉\n",
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"['A0000', 'A0001', 'A0027', 'A0030']\n",
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"----------------------------------------------------------------------\n",
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"现在来了一个车队 ['B0001','B0002','B003'], 请用一行代码把它加到 car_nums 中\n",
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"['A0000', 'A0001', 'A0027', 'A0030', 'B0001', 'B0002', 'B003']\n"
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]
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}
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],
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"source": [
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"car_nums = ['A0001','A00X9','A0027']\n",
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"print(\"现有新来了一辆车 'A0030', 请把它放在 car_nums 的最后面\")\n",
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"car_nums.append('A0030')\n",
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"print(car_nums)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"现有新来了一辆车 'A0000', 请把它放在 car_nums 的最前面\")\n",
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"car_nums.insert(0,'A0000')\n",
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"print(car_nums)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"'A00X9' 这辆车现在不租你的停车位上，请把它从 car_nums 中删掉\")\n",
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"del_index = car_nums.index('A00X9')\n",
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"del car_nums[del_index]\n",
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"print(car_nums)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"现在来了一个车队 ['B0001','B0002','B003'], 请用一行代码把它加到 car_nums 中\")\n",
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"car_nums.extend(['B0001','B0002','B003'])\n",
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"print(car_nums)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 自动询价机器人\n",
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"* 你现在管理一个商务团队，每天有客户找问价格\n",
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"* 你有一个价格对应表\n",
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"```\n",
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" prices = {\n",
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" \"SKU-A\": 100,\n",
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" \"SKU-B\": 120,\n",
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" \"SKU-C\": 190,\n",
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" \"SKU-D\": 200\n",
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" }\n",
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"``` \n",
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"* 每次客户来问题，你都要找这个表，你现在很烦，想做一个自动机器人\n",
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"* 写一个 while 循环，提示用户输入 sku\n",
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"* 根据用户输入的sku查询 prices, 找印出对应价格\n",
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"* 如果用户输入 ! 则退出循环(break)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 29,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2020-07-14T05:51:59.462459Z",
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"start_time": "2020-07-14T05:51:57.412321Z"
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}
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"请输入SKU:!\n"
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]
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}
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],
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"source": [
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"prices = {\n",
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" \"SKU-A\": 100,\n",
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" \"SKU-B\": 120,\n",
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" \"SKU-C\": 190,\n",
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" \"SKU-D\": 200\n",
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"}\n",
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"\n",
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"while True:\n",
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" sku = input(\"请输入SKU:\")\n",
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" if sku == \"!\":\n",
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" break\n",
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" print(\"sku: %s, price: %s\" % (sku,prices.get(sku)) )"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 仓库汇总机器人\n",
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"* 你现在是仓库的负责人\n",
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"* 仓库数格式是这样的\n",
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"```\n",
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" total = [\n",
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" {\"sku\": \"SKU-A\", \"quantity\": 100},\n",
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" {\"sku\": \"SKU-B\", \"quantity\": 200},\n",
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" {\"sku\": \"SKU-C\", \"quantity\": 400},\n",
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" {\"sku\": \"SKU-D\", \"quantity\": 300},\n",
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" ]\n",
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"``` \n",
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"* 请统计仓库的物品总数量(quantity)\n",
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"* 现在 SKU-A 要入库 100件商品，请更新 SKU-A 的库存记录\n",
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"* 现在 SKU-E 新品上市，要入库300件商品，请在 total 中新增一条相应记录\n",
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"* 现在 SKU-B 要退市，请将 SKU-B 这行记录删掉 #此题可选\n",
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"* 使用切片方法显示 total 中的最后一行记录"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 47,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2020-07-14T06:31:32.424430Z",
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"start_time": "2020-07-14T06:31:32.414878Z"
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}
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"请统计仓库的物品总数量(quantity)\n",
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"仓库的物品总数量: 1000\n",
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"----------------------------------------------------------------------\n",
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"现在 SKU-A 要入库 100件商品，请更新 SKU-A 的库存记录\n",
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"更新后数据： [{'sku': 'SKU-A', 'quantity': 200}, {'sku': 'SKU-B', 'quantity': 200}, {'sku': 'SKU-C', 'quantity': 400}, {'sku': 'SKU-D', 'quantity': 300}]\n",
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"----------------------------------------------------------------------\n",
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"现在 SKU-E 新品上市，要入库300件商品，请在 total 中新增一条相应记录\n",
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"更新后数据： [{'sku': 'SKU-A', 'quantity': 200}, {'sku': 'SKU-B', 'quantity': 200}, {'sku': 'SKU-C', 'quantity': 400}, {'sku': 'SKU-D', 'quantity': 300}, {'sku': 'SKU-E', 'quituantity': 3000}]\n",
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"----------------------------------------------------------------------\n",
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"现在 SKU-B 要退市，请将 SKU-B 这行记录删掉\n",
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"更新后数据： [{'sku': 'SKU-A', 'quantity': 200}, {'sku': 'SKU-C', 'quantity': 400}, {'sku': 'SKU-D', 'quantity': 300}, {'sku': 'SKU-E', 'quituantity': 3000}]\n",
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"----------------------------------------------------------------------\n",
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"使用切片方法显示 total 中的最后一行记录\n",
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"最后一行数据： {'sku': 'SKU-E', 'quituantity': 3000}\n"
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]
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}
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],
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"source": [
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"total = [\n",
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" {\"sku\": \"SKU-A\", \"quantity\": 100},\n",
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" {\"sku\": \"SKU-B\", \"quantity\": 200},\n",
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" {\"sku\": \"SKU-C\", \"quantity\": 400},\n",
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" {\"sku\": \"SKU-D\", \"quantity\": 300},\n",
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"]\n",
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"\n",
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"print(\"请统计仓库的物品总数量(quantity)\")\n",
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"total_quantity = 0\n",
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"for item in total:\n",
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" total_quantity += item[\"quantity\"]\n",
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"print(\"仓库的物品总数量:\",total_quantity)\n",
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"print(\"-\"*70)\n",
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"\n",
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"\n",
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"print(\"现在 SKU-A 要入库 100件商品，请更新 SKU-A 的库存记录\")\n",
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"for item in total:\n",
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" # 找到SKU-A，更新它的记录\n",
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" if item['sku'] == \"SKU-A\":\n",
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" item['quantity'] += 100\n",
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"print(\"更新后数据：\",total)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"现在 SKU-E 新品上市，要入库300件商品，请在 total 中新增一条相应记录\")\n",
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"sku_e = {\"sku\":\"SKU-E\", \"quituantity\":3000}\n",
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"total.append(sku_e)\n",
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"print(\"更新后数据：\",total)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"现在 SKU-B 要退市，请将 SKU-B 这行记录删掉\")\n",
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"sku_b_index = -1\n",
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"for index in range(len(total)):\n",
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" # 找到SKU-A，更新它的记录\n",
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" item = total[index]\n",
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" if item['sku'] == \"SKU-B\":\n",
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" sku_b_index = index\n",
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"if(sku_b_index != -1 ):\n",
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" del total[sku_b_index]\n",
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"print(\"更新后数据：\",total)\n",
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"print(\"-\"*70)\n",
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"\n",
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"print(\"使用切片方法显示 total 中的最后一行记录\")\n",
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"print(\"最后一行数据：\",total[-1])"
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]
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}
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],
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"varRefreshCmd": "print(var_dic_list())"
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