Language: C C++ D Haskell Lua OCaml PHP Perl Plain Text Python Ruby Scheme Tcl /* numeric diamond algorithm.. not sure if this is the fastest algorithm novatech - http://wan.pengganas.net */ #include <stdio.h> #include <math.h> void diamond(int size) { int i,j,k,x; x = sqrt(size); int left,right=-1*x+1; for (i = 1; i < x*2 ;i++) { left = (i>x)?x*2-i:i; for (k=0;k<=x-left;k++) printf(" "); right = (i>x)?right+1:right+x; printf("%d",right); for (j = 1;j < left;j++) { printf(" %d",right-(x-1)*j); } printf("\n"); } } int main() { //input must be n^2 diamond(9); diamond(36); diamond(100); diamond(121); return 0; } Private [?] Run code