This commit is contained in:
ltcptgeneral 2020-04-29 19:01:55 -05:00
parent 099c0dac91
commit 117b87b52a

View File

@ -2,7 +2,7 @@
"cells": [
{
"cell_type": "code",
"execution_count": 61,
"execution_count": 28,
"metadata": {},
"outputs": [],
"source": [
@ -13,7 +13,7 @@
},
{
"cell_type": "code",
"execution_count": 62,
"execution_count": 29,
"metadata": {},
"outputs": [],
"source": [
@ -25,11 +25,31 @@
},
{
"cell_type": "code",
"execution_count": 63,
"execution_count": 30,
"metadata": {},
"outputs": [],
"source": [
"def multiply(string):\n",
"def sub(string):\n",
" while(len(re.findall(\"\\d+[.]?\\d*[-]{1,2}\\d+[.]?\\d*\", string)) != 0):\n",
" g = re.search(\"\\d+[.]?\\d*[-]{1,2}\\d+[.]?\\d*\", string).group()\n",
" if(re.search(\"[-]{1,2}\", g).group() == \"-\"):\n",
" r = re.sub(\"[-]{1}\", \"+-\", g, 1)\n",
" string = re.sub(g, r, string, 1)\n",
" elif(re.search(\"[-]{1,2}\", g).group() == \"--\"):\n",
" r = re.sub(\"[-]{2}\", \"+\", g, 1)\n",
" string = re.sub(g, r, string, 1)\n",
" else:\n",
" pass\n",
" return string"
]
},
{
"cell_type": "code",
"execution_count": 31,
"metadata": {},
"outputs": [],
"source": [
"def mul(string):\n",
" while(len(re.findall(\"[*]{1}[-]?\", string)) != 0):\n",
" string = re.sub(\"[-]?\\d+[.]?\\d*[*]{1}[-]?\\d+[.]?\\d*\", str(reduce((lambda x, y: x * y), [Decimal(i) for i in re.split(\"[*]{1}\", re.search(\"[-]?\\d+[.]?\\d*[*]{1}[-]?\\d+[.]?\\d*\", string).group())])), string, 1)\n",
" return string"
@ -37,21 +57,48 @@
},
{
"cell_type": "code",
"execution_count": 69,
"execution_count": 32,
"metadata": {},
"outputs": [
{
"output_type": "stream",
"name": "stdout",
"text": "-29\n"
"text": "-30\n"
}
],
"source": [
"string = \"-3+4+-5*6\"\n",
"string = multiply(string)\n",
"string = add(string)\n",
"print(string)"
"def eval(string):\n",
" string = mul(string)\n",
" string = sub(string)\n",
" string = add(string)\n",
" return string"
]
},
{
"cell_type": "code",
"execution_count": 34,
"metadata": {},
"outputs": [
{
"output_type": "execute_result",
"data": {
"text/plain": "-22"
},
"metadata": {},
"execution_count": 34
}
],
"source": [
"string = \"2--3+4-5*6-1\"\n",
"eval(string)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {