👉 In computer science, a substring is a sequence of characters within another string. This includes both literal and non-literal substrings such as words, numbers, special characters, and even entire files. Substrings can be considered as small groups or units of data in a larger whole. For example, consider the following strings: 1. The string "Hello" is composed of two substrings: "He" and "llo". 2. The string "abcde" has three substrings:
