Sir why,if my code is wrong please correct it

#1

#include
using namespace std;

int max_len(int a[],int n){

int i=0;
int M=0;

while(i+1<n){
    int len=1;
    while(i+1<n and a[i]<a[i+1]){
        i++;
        len++;
    }
    while(i+1<n and a[i]>a[i+1]){
        i++;
        len++;
    }
    M=max(M,len);
}
return M;

}
int main() {

int T;
cin>>T;
while(T--){
    int a[1000000];
    int n;
    cin>>n;
    
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    cout<<max_len(a,n)<<endl;
}


return 0;

}

#2

@Harshit-Kumar-2577121455897279
you are only checking greater or smaller elements. You also have to consider equal elements
example
1
5
1 1 1 1 1
ans should be “5” not “1”

#3

@Harshit-Kumar-2577121455897279
Also consider this testcase
1
11
40 30 20 10 10 10 20 30 40 20 10
Ans should be 8 (10 10 10 20 30 40 20 10)

#4

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