Create Alexander_Angelosky_3.rb

class2_homework/Alexander_Angelosky_3.rb

@@ -0,0 +1,57 @@
+require "csv"
+$dates = Array.new
+$incomes = Array.new
+def calculate_incomes
+ i = 0
+ CSV.foreach("bank.csv") do |row|
+  $dates[i] = row[0]
+  if $dates[i] == $dates[i-1] and i>0 then
+   $incomes[i] = $incomes[i-1]+row[1].to_f
+  else
+   $incomes[i] = row[1].to_f
+  end
+  i = i+1
+ end
+end
+def convert_to_other_date_format
+ 0.upto($dates.length-1) do |i|
+  k = $dates[i]
+  $dates[i] = k[6, 4]+k[3,2]+k[0,2]
+ end
+end
+def sort_arrays
+ 0.upto($incomes.length-1) do |i|
+  max = i;
+  (i+1).upto($incomes.length-1) do |j|
+   if $dates[j]>$dates[max] then
+    max = j
+   end
+  end
+  temp = $dates[max]
+  $dates[max] = $dates[i]
+  $dates[i] = temp
+  temp = $incomes[max]
+  $incomes[max] = $incomes[i]
+  $incomes[i] = temp
+ end
+end
+def convert_to_my_date_format
+ 0.upto($dates.length-1) do |i|
+  k = $dates[i]
+  $dates[i] = k[6,2]+"/"+k[4,2]+"/"+k[0, 4]
+ end
+end
+def calculate_max
+ max = 0
+ 1.upto($incomes.length-1) do |i|
+  if $incomes[max]<$incomes[i] then
+   max = i
+  end
+ end
+ puts $dates[max]
+end 
+calculate_incomes
+convert_to_other_date_format
+sort_arrays
+convert_to_my_date_format
+calculate_max