String Match by Two Letters

Instructions

Code

Resources

Solutions

Comments

Create a function that takes two strings, $a and $b. Return the number of times the two strings contain the same two letters at the same index. The two letters must appear at consecutive indices.

For example, if $a = "bboiizz" and $b = "bbuiiz", your function should return 3, since the "bb", "ii", and "iz" appear at the same place in both strings.

Examples

strMatchBy2char("yytaazz", "yyjaaz") ➞ 3

strMatchBy2char("edabit", "ed") ➞ 1

strMatchBy2char("", "") ➞ 0

Notes

Don't forget to return the result.

Watch a quick demo on how Edabit works.

Tests

Console