diff --git a/Lesson_2/task1.py b/Lesson_2/task1.py
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+# Lesson 2 Task 1: calculate a number of each letter occurences in a string, output it sorted by letters and by numbers
+# Author: Stanislav Mykhailenko
+# License: Unlicense
+
+# Return codes:
+# 0 - OK
+
+occurences = {}
+string = input("Enter a string: ")
+
+for element in string:
+	if element in occurences: occurences[element] = occurences[element] + 1
+	else: occurences[element] = 1
+
+print("Occurrences sorted by letter: " + str(dict(sorted(occurences.items()))))
+print("Occurrences sorted by number: " + str(dict(sorted(occurences.items(), key=lambda item: item[1], reverse=True))))