Python实现线性搜索(linear search)
比如说我有数组data,1000个元素,要从里面找x;线性搜索,就是从头找到尾,速度最慢,但是适用性最广。
items = [1,2,3,4,5,6,7,8,9,10,11,
12,14,14,15,16,17,18,19,20]
def linerSearch(lst, x):
i = 0
count = len(lst)
lst.append(x)
while True:
if lst[i] == x:
del lst[count]
return i if i < count else None
i += 1
print(linerSearch(items, 1)) # 0
print(linerSearch(items, 7)) # 6
print(linerSearch(items, 19)) # 18