52 lines
846 B
Python
52 lines
846 B
Python
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# map and lambda
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arr = [1,2,3]
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sqrt = map(lambda x: x*x, arr)
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print(arr)
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print( list(sqrt) )
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# list comprehension
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# Find all of the numbers from 1-1000 that are divisible by 7
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# results = [num for num in range(1000) if num % 7 == 0]
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# print(results)
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# res = []
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# for n in range(1000):
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# if n % 7 == 0:
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# res.append(n)
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# print(res)
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# new_list = [expression(i) for i in old_list if filter(i)]
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new_list = [i**2 for i in range(1,10) if i>5]
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print(new_list)
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arr = [1,6,7,5,9]
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list2 = [ i/2 for i in arr if i > 3 ] # expression happens first, then the filter on i happens before the expression
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print( list2 )
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# zip
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print("start fib testing")
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def fib(n):
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res = [ 0 for i in range(n) ]
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res[1] = 1
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i=3
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while i<=n:
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res[i-1] = res[i-2] + res[i-3]
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i+=1
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print(res)
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fib(3)
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fib(4)
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fib(10)
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