[REFACTOR] clean code: mixed naming update.

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/greedy_algorithms/luck_balance.py

@@ -3,7 +3,7 @@
 # pylint: enable=line-too-long
 
 # pylint: disable=too-few-public-methods
-class Competition:
+class Contest:
     luck = 0
     important = 0
 
@@ -17,33 +17,33 @@ def __getitem__(self, item):
 
 def luck_balance(k, contests: list) -> int:
 
-    important_competitions: list[Competition] = []
-    nonimportant_competitions: list[Competition] = []
+    important_contests: list[Contest] = []
+    nonimportant_contests: list[Contest] = []
 
     for contest in contests:
         luck = contest[0]
         important = contest[1]
 
         if important == 1:
-            important_competitions.append(Competition(luck=luck, important=important))
+            important_contests.append(Contest(luck=luck, important=important))
         else:
-            nonimportant_competitions.append(Competition(luck=luck, important=important))
+            nonimportant_contests.append(Contest(luck=luck, important=important))
 
-    important_competitions = sorted(
-        important_competitions,
+    important_contests = sorted(
+        important_contests,
         key=lambda contest: (-contest['important'], -contest['luck'])
     )
 
     total: int = 0
-    size: int = len(important_competitions)
+    size: int = len(important_contests)
 
     for i in range(0, min(k, size)):
-        total += important_competitions[i].luck
+        total += important_contests[i].luck
 
     for i in range(min(k, size), size):
-        total -= important_competitions[i].luck
+        total -= important_contests[i].luck
 
-    for x in nonimportant_competitions:
-        total += x.luck
+    for contest in nonimportant_contests:
+        total += contest.luck
 
     return total