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Author: Albert-learner

Day14/HidePhoneNumber.py

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+# 35. 핸드폰 번호 가리기
+
+def solution(phone_number):
+    answer = ''
+
+    for i in range(len(phone_number)):
+        if i < len(phone_number) - 4:
+            answer += '*'
+        else:
+            answer += phone_number[i]
+    return answer
+
+phone_number1 = '01033334444'
+phone_number2 = '027778888'
+
+print(solution(phone_number1))
+print(solution(phone_number2))
+
+def solution_best(phone_number):
+    answer = '*' * (len(phone_number) - 4) + phone_number[-4:]
+
+    return answer
+
+print(solution_best(phone_number1))
+print(solution_best(phone_number2))

Day14/SumOfMatrix.py

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+# 27. 행렬의 덧셈
+import numpy as np
+
+def solution(arr1, arr2):
+    answer = []
+
+    tmp = []
+    for a, b in zip(arr1, arr2):
+        for c, d in zip(a, b):
+           tmp.append(c + d)
+        answer.append(tmp)
+        tmp = []
+    return answer
+
+arr1_1 = [[1, 2], [2, 3]]
+arr1_2 = [[1], [2]]
+
+arr2_1 = [[3, 4], [5, 6]]
+arr2_2 = [[3], [4]]
+
+print(solution(arr1_1, arr2_1))
+print(solution(arr1_2, arr2_2))
+print()
+
+def solution_other(arr1, arr2):
+    answer = [[c + d for c, d in zip(a, b)] for a, b in zip(arr1, arr2)]
+
+    return answer
+
+# print(solution_other(arr1_1, arr1_2))
+# print(solution_other(arr2_1, arr2_2))
+# print()
+
+# 내 풀이
+def solution_best(arr1, arr2):
+    A = np.array(arr1)
+    B = np.array(arr2)
+
+    answer = A + B
+    return answer
+
+# print(solution_best(arr1_1, arr1_2))
+# print(solution_best(arr2_1, arr2_2))

Day14/nCountNumberPeriodx.py

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+# 36. x만큼 간격이 있는 n개의 숫자
+
+def solution(x, n):
+    answer = []
+
+    for i in range(1, n + 1):
+        answer.append(x * i)
+    return answer
+
+x_1 = 2
+x_2 = 4
+x_3 = -4
+
+n_1 = 5
+n_2 = 3
+n_3 = 2
+
+print(solution(x_1, n_1))
+print(solution(x_2, n_2))
+print(solution(x_3, n_3))
+
+def solution_best(x, n):
+    answer = [i * x for i in range(1, n + 1)]
+
+    return answer
+
+print(solution_best(x_1, n_1))
+print(solution_best(x_2, n_2))
+print(solution_best(x_3, n_3))