01matriz
输入:mat = [[0,0,0],[0,1,0],[0,0,0]]
输出:[[0,0,0],[0,1,0],[0,0,0]]
Aggressive Ant
输入:mat = [[0,0,0],[0,1,0],[0,0,0]]
输出:[[0,0,0],[0,1,0],[0,0,0]]