1 files changed, 39 insertions, 0 deletions
diff --git a/Java/Beginer training/src/VampireNumber explanation.txt b/Java/Beginer training/src/VampireNumber explanation.txt
new file mode 100644
index 0000000..10ac553
--- /dev/null
+++ b/Java/Beginer training/src/VampireNumber explanation.txt
@@ -0,0 +1,39 @@
+VampireNumber Java task, code explanation with the number 1827:
+
+1827 (Number that we are checking)
+0123 (Indexes of digits, in code they are named: first, second, third & fourth)
+
+The first and second number that are multiplied are illustrated combined as one (the first half of the calculated numbers is the first multiple, and the second half - the second)
+For example, the number 1278 is actually 12 and 78 and they are multiplied to check for the result
+This is done like that to better illustrate how the numbers change
+
+Cycle:  Swap 1 with 3 (indexes):
+1827    1728
+1782    1287
+1278    1872
+
+2178	2871
+2817	2718
+2781	2187 NOTE: 2187 is the answer, so the code would stop here, but this example is continued to the end
+
+7281	7182
+7128	7821
+7812	7218
+
+8712	8217
+8271	8172
+8127	8721
+
+1827 (Here the cycles end)
+								
+Cycle: it rotates the last 3 digits, for example if we have 123,the 3 gets in the front and the others move back, i.e. 312
+
+       1 2 3 => 3 1 2
+     ^-----'     
+
+Swap 1 with 3: as the name suggests, it makes a second version of the number by swapping the 1st (index) and 2nd (index) digit 
+
+     0 1 2 3 => 0 3 2 1
+       ^---^
+ 
+	       -the swap is there because with the cycle we miss out on half of the possible numbers
+\ No newline at end of file