# Show simplex tableau
# Prereq: matrix A, vectors b,c, basis
printf("Current basis:"); printf(" %2i", basis); disp("");
B = A(:,basis); cB = c(basis);
Bm1A = B\A; x_B = B\b; zrow = cB'*Bm1A-c'; zval = cB'*x_B;
nv = find(zrow==min(zrow(zrow<=0)))(1);
r = x_B./Bm1A(:,nv);
T = [basis' Bm1A x_B r; 0 zrow zval 0]
if length(r(r>=0)) >= 1
    ovp = find(r==min(r(r>=0)))(1);
    printf("Leaving variable: %i\nEntering variable: %i\n", basis(ovp), nv);
    basis(ovp) = nv;
else
    disp("Simplex ended");
endif