Do

Do[expr, {max}]

evaluates expr max times.

Do(expr, {j, max})

evaluates expr max times, substituting j in expr with values from 1 to max.

Do(expr, {j, min, max})

starts with j = min.

Do(expr, {j, min, max, step})

uses a step size of step.

Do(expr, {j, jmin, jmax, jstep}, {k, kmin, kmax, kstep}, ...)

evaluates expr for each k from kmin to kmax, for each j from jmin to jmax, etc.

Related terms

Break, Continue, CompoundExpression, For, If, Return, While