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list extend solution in Clear category for Swap Nodes by Sioul
def swap_nodes(a):
new_list = []
for i in range(len(a)//2):
new_list.extend((a[2*i+1], a[2*i]))
if len(a) % 2:
new_list.append(a[-1])
return new_list
Dec. 16, 2019
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