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‎python-leetcode/.ipynb_checkpoints/709. 转换成小写字母-checkpoint.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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"#### 题目描述\n",
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"实现函数 ToLowerCase()，该函数接收一个字符串参数 str，并将该字符串中的大写字母转换成小写字母，之后返回新的字符串。\n",
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"\n",
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"示例 1：\n",
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"\n",
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"输入: \"Hello\"\n",
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"\n",
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"输出: \"hello\"\n",
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"\n",
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"#### 思路\n",
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"1. 直接使用内置函数\n",
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"2. 使用字典"
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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": 4,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2019-07-01T07:13:18.693798Z",
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"start_time": "2019-07-01T07:13:18.683899Z"
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}
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'hello'"
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]
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},
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"execution_count": 4,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"class Solution(object):\n",
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" def toLowerCase(self, str):\n",
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" \"\"\"\n",
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" :type str: str\n",
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" :rtype: str\n",
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" \"\"\"\n",
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" return str.lower()\n",
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" \n",
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" \n",
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"str = \"Hello\"\n",
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"solution = Solution()\n",
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"solution.toLowerCase(str)"
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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": "2019-07-02T00:57:54.821736Z",
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"start_time": "2019-07-02T00:57:54.805132Z"
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}
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'hello'"
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]
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},
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"execution_count": 29,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"class Solution(object):\n",
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" def toLowerCase(self, str):\n",
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" \"\"\"\n",
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" :type str: str\n",
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" :rtype: str\n",
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" \"\"\"\n",
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" letters = {\n",
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" 'A': 'a',\n",
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" 'B': 'b',\n",
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" 'C': 'c',\n",
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" 'D': 'd',\n",
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" 'E': 'e',\n",
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" 'F': 'f',\n",
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" 'G': 'g',\n",
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" 'H': 'h',\n",
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" 'I': 'i',\n",
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" 'J': 'j',\n",
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" 'K': 'k',\n",
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" 'L': 'l',\n",
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" 'M': 'm',\n",
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" 'N': 'n',\n",
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" 'O': 'o',\n",
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" 'P': 'p',\n",
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" 'Q': 'q',\n",
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" 'R': 'r',\n",
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" 'S': 's',\n",
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" 'T': 't',\n",
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" 'U': 'u',\n",
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" 'V': 'v',\n",
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" 'W': 'w',\n",
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" 'X': 'x',\n",
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" 'Y': 'y',\n",
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" 'Z': 'z'\n",
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" }\n",
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" for ele in str:\n",
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" if ele in letters:\n",
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" str = str.replace(ele, letters[ele])\n",
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" return str\n",
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" \n",
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"str = \"Hello\"\n",
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"solution = Solution()\n",
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"solution.toLowerCase(str)"
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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": null,
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"toc": {
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"number_sections": true,
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"sideBar": true,
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"skip_h1_title": false,
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}

‎python-leetcode/709. 转换成小写字母.ipynb‎

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{
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"cells": [
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{
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"cell_type": "markdown",
5+
"metadata": {},
6+
"source": [
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"#### 题目描述\n",
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"实现函数 ToLowerCase()，该函数接收一个字符串参数 str，并将该字符串中的大写字母转换成小写字母，之后返回新的字符串。\n",
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"\n",
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"示例 1：\n",
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"\n",
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"输入: \"Hello\"\n",
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"\n",
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"输出: \"hello\"\n",
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"\n",
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"#### 思路\n",
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"1. 直接使用内置函数\n",
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"2. 使用字典"
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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": 4,
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"metadata": {
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"ExecuteTime": {
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"end_time": "2019-07-01T07:13:18.693798Z",
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"start_time": "2019-07-01T07:13:18.683899Z"
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}
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'hello'"
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]
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},
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"execution_count": 4,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"class Solution(object):\n",
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" def toLowerCase(self, str):\n",
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" \"\"\"\n",
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" :type str: str\n",
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" :rtype: str\n",
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" \"\"\"\n",
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" return str.lower()\n",
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" \n",
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" \n",
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"str = \"Hello\"\n",
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"solution = Solution()\n",
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"solution.toLowerCase(str)"
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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": "2019-07-02T00:57:54.821736Z",
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"start_time": "2019-07-02T00:57:54.805132Z"
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}
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'hello'"
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]
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},
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"execution_count": 29,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"class Solution(object):\n",
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" def toLowerCase(self, str):\n",
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" \"\"\"\n",
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" :type str: str\n",
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" :rtype: str\n",
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" \"\"\"\n",
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" letters = {\n",
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" 'A': 'a',\n",
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" 'B': 'b',\n",
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" 'C': 'c',\n",
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" 'D': 'd',\n",
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" 'E': 'e',\n",
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" 'F': 'f',\n",
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" 'G': 'g',\n",
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" 'H': 'h',\n",
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" 'I': 'i',\n",
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" 'J': 'j',\n",
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" 'K': 'k',\n",
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" 'L': 'l',\n",
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" 'M': 'm',\n",
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" 'N': 'n',\n",
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" 'O': 'o',\n",
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" 'P': 'p',\n",
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" 'Q': 'q',\n",
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" 'R': 'r',\n",
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" 'S': 's',\n",
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" 'T': 't',\n",
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" 'U': 'u',\n",
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" 'V': 'v',\n",
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" 'W': 'w',\n",
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" 'X': 'x',\n",
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" 'Y': 'y',\n",
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" 'Z': 'z'\n",
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" }\n",
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" for ele in str:\n",
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" if ele in letters:\n",
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" str = str.replace(ele, letters[ele])\n",
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" return str\n",
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" \n",
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"str = \"Hello\"\n",
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"solution = Solution()\n",
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"solution.toLowerCase(str)"
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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": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "python pratice",
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"name": "env_name"
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.7.1"
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},
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"toc": {
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"base_numbering": 1,
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"nav_menu": {},
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"number_sections": true,
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"sideBar": true,
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"skip_h1_title": false,
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"title_cell": "Table of Contents",
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"title_sidebar": "Contents",
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"toc_cell": false,
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"toc_section_display": true,
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"toc_window_display": false
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}

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