问题描述
replaceAll("(?s)(.)(?=.*\1)","")这句正则什么意思replaceAll("(?s)(.)(?=.*\1)","")这句正则什么意思for(longi=102345;i<987654;i++){if(String.valueOf(i).replaceAll("(?s)(.)(?=.*\1)","").length()==String.valueOf(i).length()){
时间: 2024-10-26 16:25:14
replaceAll("(?s)(.)(?=.*\1)","")这句正则什么意思replaceAll("(?s)(.)(?=.*\1)","")这句正则什么意思for(longi=102345;i<987654;i++){if(String.valueOf(i).replaceAll("(?s)(.)(?=.*\1)","").length()==String.valueOf(i).length()){