Export["C:/T.txt",
IntegerString[#,10,6]&/@Range[0,10^6-1]]//Timing
{12.776,"C:/T.txt"}
Export["C:/T.txt",
StringJoin/@Tuples[ToString/@Range[0,9],6]]//Timing
{15.413,"C:/T.txt"}
6 digits: 000000......999999
Export["C:/T.txt",
IntegerString[#,10,6]&/@Range[0,10^6-1]]//Timing
{12.776,"C:/T.txt"}
Export["C:/T.txt",
StringJoin/@Tuples[ToString/@Range[0,9],6]]//Timing
{15.413,"C:/T.txt"}
6 digits: 000000......999999
转载于:https://www.cnblogs.com/c-hy/archive/2012/08/05/2623528.html