Total number of $8$ character passwords that have at least $1$ digit, $1$ uppercase letter and $1$ lowercase letter
113242
How many ways can you create a password of 10 characters long that has at least one lowercase letter (a-z) and at least one number ($0-9$)?
80771
spelling numbers
8669
Regular Expression for password validation
80744
What is the number of strings at size $n$ that is constructed from ${a,b,c,d}$ and there is an even num of $a$
35515
Find the number of $(m+n)$ digit binary sequences with $m$ $0$'s and $n$ $1$'s such that no two $1$'s are adjacent
61372
Numbering exceeding the 26 letter alphabet
142223
Multiple Passwords on One Account
33478
count the number of lines, words, and characters within an input
37140
Zero-pad digits in string
35073
finding the number of bit string containing eight 0s and twelve 1s?
152113
Formula to this pattern? $1$, $11$, $21$, $1211$, $111221$, $\ldots$
1808
Why is char[] preferred over String for passwords?
42706
How many $N$ digits binary numbers can be formed where $0$ is not repeated
853
Write down the sum of sum of  sum of digits of $4444^{4444}$
30057
Reference - Password Validation
87956
10-digit numbers with constraints
98997
Sum of irreducible character values in a row of the character table