What is the most concise script to list the missing ones in a digit sequence?
76664
How to print the name of missing files in a folder?
136704
Find missing indexes
140522
Sorting a list of dot-separated numbers, like software versions
127583
Formatting a number with fixed number of significant digits
116540
Positive integers less than 1000 without repeated digits
24557
How do I check if a number is a palindrome?
114764
Remove insignificant trailing zeros from a number?
98721
How to find missing files with sequential names?
45456
Do the digits of $\pi$ contain every possible finite-length digit sequence?
69990
How to find gaps in sequential numbering in mysql?
12835
How to efficiently find positions of duplicates?
15920
Derangements with repetitive numbers
118693
Android finding missing numbers
130581
Creating a range of numbers from 08 to 10 in bash doesn't include 0 in front of one digit numbers
81217
Fastest way to find out minimum of 3 numbers?
45788
$n$-th digit in the sequence of natural numbers
25576
Characterization of short exact sequences