#tolowercase

Substring, substr, touppercase, tolowercase methods

substring() : It is used to extract specified chars between given index. It can read towards left and right starting with specified index.

Syntax: string.substring(start, end)

Ex: string.substring(0,7); string.substring(7,0);

substr() : It is used to extract specified chars between given index. It can read towards right not left.

Syntax: string.substr(start, end)…