例如,有数组array= ["J_Z_8001.XLS","J_M_8003.XLS","M_8010.XLS","M_99_40_8060.XLS"]
根据条件进行判断,将:
第0、2个元素前面加个NEW改为“NEW_J_Z_8001.XLS”,"NEW_M_8010.XLS"
第1、3个元素前面加个USED改为"USED_J_M_8003.XLS","USED_M_99_40_8060.XLS"
修改条件我自己写,怎么修改数组里的元素内容我不知道,向大神请教!