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1.py
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1.py
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import time
def sum_of_n_2(n):
start = time.time()
the_sum = 0
for i in range(1, n + 1):
the_sum += i
end = time.time()
return the_sum, end - start
def sum_of_n_3(n):
start = time.time()
sum3 = (n * (n + 1)) / 2
end = time.time()
return sum3, end - start
def anagram_solution4(s1, s2):
c1 = [0] * 26
c2 = [0] * 26
for i in range(len(s1)):
pos = ord(s1[i]) - ord("a")
c1[pos] = c1[pos] + 1
for i in range(len(s2)):
pos = ord(s2[i]) - ord("a")
c2[pos] = c2[pos] + 1
j = 0
still_ok = True
while j < 26 and still_ok:
if c1[j] == c2[j]:
j = j + 1
else:
still_ok = False
return still_ok
if __name__ == "__main__":
for i in range(5):
print("Sum is %d required %10.7f seconds" % sum_of_n_2(1000000))
print("------------------------------------------------------------")
for i in range(5):
print("Sum3 is %d required %10.15f seconds" % sum_of_n_3(100000000))
print(anagram_solution4("apple", "pleap"))