Add code

Unit-3/userStory.java

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+import java.util.Scanner;
+
+public class UserStory {
+
+  private String[] countries = FileReader.toStringArray("countries.txt");
+  
+  private double[] populations = FileReader.toDoubleArray("populations.txt");
+  private double[] unemployment = FileReader.toDoubleArray("unemployment.txt");
+  private double[] internetpercent = FileReader.toDoubleArray("internetpercent.txt");
+  
+  private int opt1;
+  private int opt2;
+
+  private int width;
+  private int height;
+  
+  public UserStory() {
+    this(0, 2, 50, 100);
+  }
+
+  public UserStory(int opt1, int opt2, int width, int height){
+    this.opt1 = opt1;
+    this.opt2 = opt2;
+    
+    this.width = width;
+    this.height = height;
+  }
+
+  public double[] getArrayFromOpt(int i) {
+    switch(i) {
+      case 0:
+        return this.populations;
+      case 1:
+        return this.unemployment;
+      case 2:
+        return this.internetpercent;
+      default:
+        return null;
+    }
+  }
+
+  public String getNameFromOpt(int i) {
+    switch(i) {
+      case 0:
+        return "populations";
+      case 1:
+        return "unemployment";
+      case 2:
+        return "internetpercent";
+      default:
+        return null;
+    }
+  }
+
+  // Method to find maximum in an array 
+  public double max(double[] arr){ 
+    double max = arr[0]; 
+    for (int i = 0; i < arr.length; i++) 
+      if (arr[i] > max){
+        max = arr[i]; 
+      }
+     
+    return max; 
+  }
+
+  // Find the corrosponding country name, of largest value of array
+  public String maxStr(double[] arr){
+    double max = arr[0]; 
+    String maxName = "";
+    for (int i = 0; i < arr.length; i++) 
+      if (arr[i] > max){
+        max = arr[i]; 
+        maxName = this.countries[i];
+      }
+     
+    return maxName; 
+  }
+
+  // Method to find minimum in an array 
+  public double min(double[] arr){ 
+    double min = arr[0]; 
+    for (int i = 0; i < arr.length; i++) 
+      if (arr[i] < min){
+        min = arr[i]; 
+      }
+     
+    return min; 
+  }
+  
+  // Find the corrosponding country name, of smallest value of array
+  public String minStr(double[] arr){
+    double min = arr[0]; 
+    String minName = "";
+    for (int i = 0; i < arr.length; i++) 
+      if (arr[i] < min){
+        min = arr[i]; 
+        minName = this.countries[i];
+      }
+     
+    return minName; 
+  }
+
+  // A method to find at which x and y choords are there points.
+  public boolean[][] pointAtChoord(double[] arr1, double[] arr2, double maxX, double maxY) {
+
+    // Create a 2d boolean array that is all false
+    boolean[][] result = new boolean[this.width][this.height];
+    for(int a = 0; a < this.width; a++){
+      for(int b = 0; b < this.height; b++){
+        result[a][b] = false;
+      }
+    }
+    
+    for(int i=0;i<arr1.length;i++){
+      double x = arr1[i];
+      double y = arr2[i];
+
+      // Map the numbers onto points in the output
+      x = width-Math.round((x/maxX)*(this.width))-2;
+      y = Math.round((y/maxY)*(this.height))-1;
+
+      // Make all values < 0, = 0
+      x = Math.max(x, 0);
+      y = Math.max(y, 0);
+
+      // Make the output point true
+      result[(int)x][(int)y] = true;
+    }
+    return result;
+  }
+
+  // Output the scatter plot, and some other numbers, as a string.
+  public String plotter() {
+
+    // Get arrays from options
+    String arr1Name = getNameFromOpt(this.opt1);
+    String arr2Name = getNameFromOpt(this.opt2);
+    double[] arr1 = getArrayFromOpt(this.opt1);
+    double[] arr2 = getArrayFromOpt(this.opt2);
+
+    // Calc maximum x and y vars
+    double maxX = max(arr1);
+    double maxY = max(arr2);
+
+    
+    // Calc points
+    boolean[][] plot = pointAtChoord(arr1, arr2, maxX, maxY);
+    
+    String out = "";
+
+    // Format scatter plot
+    out += "\n";
+    out += arr1Name + " As (x) vs. " + arr2Name + " As (y)";
+    out += "\n";
+    out += "0" + (" ".repeat(this.height)) + maxX + "\n";
+    out += "/" + ("-".repeat(this.height)) + "\\ " + maxY + "\n";
+    for(int a=0;a<this.width;a++){
+      out += "|";
+      for(int b=0;b<height;b++){
+        if(plot[a][b]){
+          out += "#";
+        }else{
+          out += " ";
+        }
+      }
+      out += "|\n";
+    }
+    out += "\\" + ("-".repeat(this.height)) + "/ 0";
+    out += "\n\n";
+    
+    return out;
+  }
+
+  // Get stats about the arrays passed
+  public String metaStats() {
+    // Get arrays from options
+    String arr1Name = getNameFromOpt(this.opt1);
+    String arr2Name = getNameFromOpt(this.opt2);
+    double[] arr1 = getArrayFromOpt(this.opt1);
+    double[] arr2 = getArrayFromOpt(this.opt2);
+
+    String out = "";
+    
+    // Calc the values and countries of min and max stats
+    out += arr1Name + " Maximum: \n";
+    out += max(arr1) + " - " + maxStr(arr1) + "\n";
+    out += arr1Name + " Minimum: \n";
+    out += min(arr1) + " - " + minStr(arr1) + "\n";
+      
+    out += arr2Name + " Maximum: \n";
+    out += max(arr2) + " - " + maxStr(arr2) + "\n";
+    out += arr2Name + " Minimum: \n";
+    out += min(arr2) + " - " + minStr(arr2) + "\n";
+
+    out += "\n\n";
+    
+    return out;
+  }
+  
+  public String toString() {
+    return plotter() + metaStats();
+  }
+  
+}