shashir

abstract class Exp {
  def evaluate(x: Double): Double
  def derivative(): Exp
  def toStringCanonical(): String
}

object Exp {
  def main(args: Array[String]): Unit = {
    println(parse("2*x^2").derivative().toStringCanonical())
  }

shashir

// https://github.com/shashir/cs7641/blob/master/lessons/ml_p1_lesson_01_decision_trees.md#id3-algorithm

import scala.collection.mutable.{Set => MSet}

case class Tree[T](
  value: T,
  children: MSet[Tree[T]] = MSet.empty[Tree[T]]
  ) {
  override def toString(): String = {
    value +

shashir

object ArgMinMax {
  import scala.reflect.ClassTag

  def argmin[X: ClassTag, Y <% Ordered[Y] : ClassTag](n: Iterable[X], f: X => Y): X = {
    val (argmin: X, min: Y) = n.tail.fold((n.head, f(n.head))) { case ((a: X, m: Y), x: X) =>
      val fOfx: Y = f(x)
      if (fOfx < m) (x, fOfx) else (a, m)
    }
    return argmin
  }

shashir

import java.awt.image.BufferedImage
import java.io.File
import javax.imageio.ImageIO

case class Histogram(
  resolution: Int,
  pixels: Int,
  histogram: Array[Array[Array[Int]]]
) {
  def distance(that: Histogram): Double = {

shashir

import scala.reflect.ClassTag

case class Matrix[T : ClassTag](
  rows: Int,
  cols: Int,
  matrix: Array[Array[T]]
)(implicit num: Numeric[T]) {
  import num._

  require(matrix.length == rows, "Row number incorrect.")

shashir

import numpy as np
import random as rand
import datetime

class QLearner(object):
    def __init__(self, \
        num_states=100, \
        num_actions = 4, \
        alpha = 0.2, \
        gamma = 0.9, \

shashir

("[^"]*")|[^" ]+

shashir

import java.sql.Connection
import java.sql.DriverManager
import java.sql.ResultSet
import java.sql.Statement

import scala.annotation.tailrec

import com.typesafe.scalalogging.slf4j.Logger
import org.slf4j.LoggerFactory

shashir

#!/bin/bash

SERVERS=(
# list of servers
)
# USER=
# SSH_KEY=

echo "Command to run is: $1"
for server in ${SERVERS[@]}; do

shashir

import java.util.Scanner;

public class TicTacToe {
  public static char X = 'X';
  public static char O = 'O';
  public static char B = ' ';

  public static void main(String[] args) {
    /*
     * Squares are associated with following variables.