Sr : adding lines

Author: SUSHMIT ROY

.DS_Store

@@ -0,0 +1,57 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[1]"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "s =[1,3]\n",
+    "\n",
+    "[s[i] for i in range(len(s)) if i %2 == 0]\n",
+    "\n",
+    "def FFT(w, s):\n",
+    "    n = len(s) \n",
+    "    if n==1: return [s[0]] \n",
+    "    f0 = FFT(w*w, [s[i] for i in range(n) if i % 2 == 0]) \n",
+    "    f1 = FFT(w*w, [s[i] for i in range(n) if i % 2 == 1]) \n",
+    "    return [f0[j]+w**j*f1[j] for j in range(n//2)] + [f0[j]-w**(j+n//2)*f1[j] for j in range(n//2)]\n",
+    "\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.1"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}

.idea/workspace.xml

@@ -0,0 +1,46 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [],
+   "source": [
+    "s =[1,3]\n",
+    "\n",
+    "[s[i] for i in range(len(s)) if i %2 == 0]\n",
+    "\n",
+    "def FFT(w, s):\n",
+    "    n = len(s) \n",
+    "    if n==1: return [s[0]] \n",
+    "    f0 = FFT(w*w, [s[i] for i in range(n) if i % 2 == 0]) \n",
+    "    f1 = FFT(w*w, [s[i] for i in range(n) if i % 2 == 1]) \n",
+    "    return [f0[j]+w**j*f1[j] for j in range(n//2)] + [f0[j]-w**(j+n//2)*f1[j] for j in range(n//2)]\n",
+    "\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.1"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}