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homework_3_sol.py
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homework_3_sol.py
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print("{:-^20}".format(" problem 1-1 "))
for i in range(5):
print("*" * (i + 1))
print("{:-^20}".format(" problem 1-2 "))
for i in range(5):
for _ in range(i + 1):
print("*", end="")
print("")
print("{:-^20}".format(" problem 2-1 "))
n = 10
for i in range(n):
form = "{:^" + str(2 * n - 1) + "}"
print(form.format("*" * (2 * i + 1)))
print("{:-^20}".format(" problem 2-2 "))
for i in range(5):
for _ in range(5 - (i + 1)):
print(" ", end="")
for _ in range(2 * i + 1):
print("*", end="")
print("")
print("{:-^20}".format(" problem 3-1 "))
sample_str = "BACAABBCCE"
c = "C"
index_lst = []
idx = 0
for s in sample_str:
print(idx, s)
if c == s:
index_lst.append(idx)
idx += 1
print(index_lst)
print("{:-^20}".format(" problem 3-2 "))
index_lst = []
for idx in range(len(sample_str)):
if sample_str[idx] == c:
index_lst.append(idx)
print(index_lst)
print("{:-^20}".format(" problem 3-3 "))
index_lst = []
for idx, s in enumerate(sample_str):
if c == s:
index_lst.append(idx)
print(index_lst)