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class py_solution: def twoSum(self, nums, target): lookup = {} for i, num in enumerate(nums): if target - num in lookup: return (lookup[targ... 阅读全文
posted @ 2018-12-13 10:05
anobscureretreat
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#用递归函数求 n 阶乘的值 def factorial(i): if i==0: return 1 else: return i * factorial(i-1)# sum=n*(n-1)!所以直接调用自身 n=int(input('请输入阶乘数:')) for i in range(n+1): print('%d !值为 %3d... 阅读全文
posted @ 2018-12-13 01:03
anobscureretreat
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# 用for循环计算 n! sum = 1 n=int(input('请输入n=')) for i in range(0,n+1): for j in range(i,0,-1): sum *= j # sum=sum*j print('%d!=%3d' %(i,sum)) sum=1 阅读全文
posted @ 2018-12-13 00:57
anobscureretreat
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输出 阅读全文
posted @ 2018-12-13 00:02
anobscureretreat
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