random walk for solution attachment-random walk for solution attachment， developed in DTU

主要实现随机游走算法，然后得到最优的结果(The algorithm of random walk is realized and the optimal result is obtained.)

求解一个人随机向四面行走五百步后的距离并以excel表格的形式展示(A guy, let's call him John has had way too many drinks while out at meadows. He has no idea where he is going. Every time he takes a step randomly he goes in one of the four directions with equal probability (N, S, E