The phrase "a certain string of" is correct and usable in written English.
It can be used when referring to a specific sequence of characters, words, or elements without specifying what that sequence is.
Example: "The program requires a certain string of characters to unlock the next level."
Alternatives: "a specific sequence of" or "a particular set of".
A bug in Apple's iOS means that anyone can crash an iPhone by simply sending it a certain string of characters in a message.
It is visible in the sartorial humility of the rich, for whom it is "almost a point of snobbery... to point out that a certain string of pearls or a rickety cabinet they own is a clever fake".
One day, when I was preparing a test for my 10th-grade class, I was creating problems that required the kids to recognize a pattern in a certain string of numbers and come up with an equation that would produce the same string of numbers.
For example, we have assumed that the strings of symbols are ergodic: the probability distribution for the occurrences of each symbol is assumed to be stable through time and independently of the selection of a certain string.
(The term 'sentence' without epithet, however, will be used in its linguistic sense for certain strings of words or symbols).
Then Schwartz and his colleagues treat the DNA with enzymes, each of which slices it only at certain strings of bases.
By entering certain strings of text into user input boxes on Web sites, cybercriminals are able to confuse their commands with data in a site's Structured Query Language (SQL) database and gain control of it, says Grossman.
The word 'instance' is a relation noun for a relation certain string types bear to certain schemas.
Regular expressions are used by many text editors and utilities to search bodies of text for certain patterns and, for example, replace the found strings with a certain other string.
Most used guitars will need to be set up, so a certain amount of string buzz can be fixed.
If you are looking for a file that contains a certain phrase or string of characters, you can use the grep command.
