how to determine best, wost, either spacial locality?

Given the following definition of structs #define N 1000 typedef struct int vel[3]: int acc[3] point; points p[N]: and the three following routines (which all do the same thing): (a) clear1 void clear1(point p, int n) int i, j plil.vellj- pl].acc [j] = 0; (b) clear2 void clear2(point p, int n) int i, j for {i= 0; i<>