in C++

make three changes in the given code, to get sample test cases pass. modify your code to get debug exaclty...

void findZigZagSequence(vector < int > a, int n){ sort(a.begin(), a.end()); int mid = (n + 1)/2-1; //1st change swap(a[mid], a[n-1]);

int st = mid + 1;
int ed = n - 2;              //2nd change
while(st <= ed){
    swap(a[st], a[ed]);
    st = st + 1;
    ed = ed - 1;              //3rd change
}
for(int i = 0; i < n; i++){
    if(i > 0) cout << " ";
    cout << a[i];
}
cout << endl;

}

In Python, I'm getting the same as the expected output but the tests fail.

`def findZigZagSequence(a, n): a.sort() mid = (n - 1)//2 a[mid], a[n-1] = a[n-1], a[mid]

st = mid + 1
ed = n - 2
while (st <= ed):
    a[st], a[ed] = a[ed], a[st]
    st += 1
    ed -= 1

for i in range(n):
    if i == n-1:
        print(a[i])
    else:
        print(a[i], end=' ')
return

There is no code provided in JavaScript

There doesn't seem to be a way to do this in typescript as @types/node is not included (is there a way to import modules with the hackerrank platform?). This error will appear when you try to run. solution.ts(3,1): error TS2580: Cannot find name 'process'. Do you need to install type definitions for node? Try npm i @types/node.

JAVA:

public static void findZigZagSequence(int [] a, int n){ Arrays.sort(a); int mid = n/2; int temp = a[mid]; a[mid] = a[n - 1]; a[n - 1] = temp;

    int st = mid + 1;
    **int ed = n - 2;**
    while(st <= ed){
        temp = a[st];
        a[st] = a[ed];
        a[ed] = temp;
        st = st + 1;
       ** ed = ed - 1;**
    }
    for(int i = 0; i < n; i++){
        if(i > 0) System.out.print(" ");
        System.out.print(a[i]);
    }
    System.out.println();
}