A heuristic method is an approachthat takesadvantage of the structure of the problem.By using a set of “sensible”rules, it gets asolution that is “good”-i.e., close to optimal orsometimes even optimal.Heuristics methods are used when it is notpossible or computationally feasible to solve forthe optimum.We present three common heuristics :Silver-Meal, least unit cost and part periodbalancing