prihandi · March 20, 2017 13:57 · Mar 20, 2017
diff --git a/inspira_spiral.rb b/inspira_spiral.rb
@@ -0,0 +1,44 @@
+def cetakPola(size=1)
+  arr = Array.new(size)  { Array.new(size) }
+  chars = (size**2).to_s.size
+  maks = size-1
+  x = maks / 2 
+  y = maks / 2
+
+  (1..size).each do |ps|
+    start = (ps-1)**2 + 1
+    ends  = ps**2
+    mid   = start + ((ends - start) / 2)
+    if ps == 1
+      arr[x][y] = 1
+      y += 1
+    elsif ps.even?
+      #right side move down
+      (start..mid).each { |i| arr[x][y] = i; x += 1}
+      #move cursor
+      y -= 1
+      x -= 1
+      #bottom side move left
+      (mid+1..ends).each { |i| arr[x][y] = i; y -= 1}
+    else
+      #left side move up
+      (start..mid).each { |i| arr[x][y] = i; x -= 1}
+      #move cursor
+      y += 1
+      x += 1
+      #upper side move right
+      (mid+1..ends).each { |i| arr[x][y] = i; y += 1}
+    end
+  end
+  p chars
+  arr.each do |a|
+    a = a.map { |i| i.to_s.ljust( chars, ' ')}
+    print a.join(' '),"\n"
+  end
+end
+
+cetakPola()
+cetakPola(1)
+cetakPola(2)
+cetakPola(3)
+cetakPola(4)