Give a useful (big Theta) estimation for each of following function t(n).

f. t(n) is the runtime of following function, public static int f1(int n){ int mid = n/2; for (int i = mid; i >= 0; i--) System.out.println(i); for (int i = mid + 1; i 0; i /= 3){ System.out.println(i); return mid; h.t(n) is the runtime of following function, public static int f3(int n){ for (int i = n; i >= 0; i--){ for (int j = 0, j0; k /= 3) System.out.println(i * j + k); return n; i. t(n) is the runtime of following function, public static int f4(int[] a, int start, int end){ int ans = 0; if (start >= end) ans = a[start]; else { int mid = (start + end) / 2; int x = f(a, start, mid); int y = f4(a, mid+ 1, end); print(a, start, end); //print each element in a from start to end if (x