a little more in usage()
@@ -70,9 +70,9 @@ static void usage(const char *prog)
" -n, --num <int> How many elements in the table for random generated array.\n"
" -l, --len <int> length of the random string.\n"
" -s, --software Use software approach.\n"
- " -m, --method <0/1> 0: compare one by one (Only in SW).\n"
- " 1: Use hash table\n"
- " 2: Sort and do intersection\n"
+ " -m, --method <0/1/2> 0: compare one by one (Slow, and only in SW).\n"
+ " 1: Use Hash table\n"
+ " 2: Use Sort and merge\n"
" -I, --irq Enable Interrupts\n"
"\n"
"Example:\n"
