题解 | #最长无重复子数组#
最长无重复子数组
https://www.nowcoder.com/practice/b56799ebfd684fb394bd315e89324fb4
package main
func maxLength(arr []int) int {
ma := make(map[int]int)
res := 0
st := -1
for i,val := range arr {
pos,has := ma[val]
if has {
if st < pos {
st = pos
}
}
ma[val] = i
if res < i - st {
res = i - st
}
}
return res
}
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