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Author: Albert-learner

Day7/DividedIntoNumberArray.py

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+# 15. 나누어 떨어지는 숫자 배열
+
+def solution(arr, divisor):
+    answer = []
+
+    for i in arr:
+        if i % divisor == 0:
+            answer.append(i)
+        else:
+            continue
+
+    if not answer:
+        answer.append(-1)
+
+    answer.sort()
+    return answer
+
+arr_1 = [5, 9, 7, 10]
+arr_2 = [2, 36, 1, 3]
+arr_3 = [3, 2, 6]
+
+divisor_1 = 5
+divisor_2 = 1
+divisor_3 = 10
+
+print(solution(arr_1, divisor_1))
+print(solution(arr_2, divisor_2))
+print(solution(arr_3, divisor_3))
+
+def solution_best(arr, divisor):
+    answer = sorted([n for n in arr if n % divisor == 0]) or [-1]
+
+    return answer
+
+# print(solution_best(arr_1, divisor_1))
+# print(solution_best(arr_2, divisor_2))
+# print(solution_best(arr_3, divisor_3))

Day7/NoSameNumber.py

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+# 11. 같은 숫자는 싫어
+
+# 완전 탐색 ... 잘못 생각함
+def solution(arr):
+    answer = []
+
+    answer.append(arr[0])
+    for i in range(1, len(arr)):
+        if arr[i] != arr[i - 1]:
+            answer.append(arr[i])
+    return answer
+
+arr_1 = [1, 1, 3, 3, 0, 1, 1]
+arr_2 = [4, 4, 4, 3, 3]
+
+print(solution(arr_1))
+print(solution(arr_2))
+
+def solution_best(arr):
+    answer = arr[:1]
+
+    for value in arr:
+        if answer[-1] == value:
+            continue
+        answer.append(value)
+    return answer
+
+# print(solution_best(arr_1))
+# print(solution_best(arr_2))
+
+# pop을 하면 안 됨, 개수가 많아서
+# def solution_error(arr):
+#     answer = []
+#
+#     # 배열 맨 앞의 값
+#     first = arr.pop(0)
+#     answer.append(first)
+#
+#     for i in arr:
+#         if i == first and i != answer[-1]:
+#             answer.append(i)
+#         elif i == first and i == answer[-1]:
+#             continue
+#         elif i != first and i not in answer:
+#             answer.append(i)
+#         elif i != first and i != answer[-1]:
+#             answer.append(i)
+#
+#         first = arr.pop(0)
+#
+#     return answer
+
+# print(solution_error(arr_1))
+# print(solution_error(arr_2))
+
+
+