find complexity of each code block below:

a)

int x = 0;

for (int i = 0; i < n; i++) {

for (int j = 0; ij< i; j++) {

x++;

}

b)

int x = 0; for (int i = n; i >= 1; i /= 2) {

x += i;

}

c)

int x = 0; for (int i = 0; i < n; i++) {

for (int j = 0; j < n * n / 3; j++) {

x += j;

}

}

d)

int x = 0; for (int i = n; i >= 0; i -= 1) {

if (i % 3 == 0) {

break;

} else { x += n;

}

}

e)

int x = 0; for (int i = 0; i < n; i++) {

if (i % 5 == 0) { for (int j = 0; j < n; j++) {

if (i == j) { x += i * j;

}

}

}

}

f)

int x = 0; for (int i = 0; i < n; i++) {

if (n < 100000) { for (int j = 0; j < n; j++) {

x += 1;

}

} else { x += 1;

}

}