举两个举例， 如上图， 应该解释的很清晰了把
data=[1,2,3,4,5,6,7,8,9,11,14,13,15,14,15,16,17]
def f(a,i){
if(i<2)return int()
ncount=0
for (k in sort(1..i,false)){
if(a[k]>a[k-1]){
ncount=ncount+1
}
if(ncount>=2){
return a[k-1]
}
}
return int()
}
each(f{data,},0..(size(data)-1))