I M Having Trouble With Understanding The Concept Of Time Complexity And Big O E

Urgent please help. I’m having trouble with understanding the concept of time complexity and big-o estimate.. For the following parts, try to get the best Big-O estimate and briefly justify your answers. programming c language.

Part a) (nested loop)

int i, j;

int n = 100;

for (i = 1; i <= n; i++) { for (j = 3*i; j <= n; j++) { printf("programming is funn"); } } (Is this one O(n^2)? Part b)(nested loop) int i, j; int n = 1000000; for (i = 1; i <= n; i++) { for (j = 1; j <= 10000; j++) { printf("%d %dn", i, j); } } (is this one O(N)? Part c)(nested loop) int i = 0; int n = 10; int j; while (i < n) { i++; j = i; while (i < n) { printf("hello %dn", i); i++; } i = j; } Part d)(nested loop) int i = 0; int n = 10; int j; while (i < n) { i++; j = i; while (i < n) { printf("hello %dn", i); i++; break; } i = j; }

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