Programmer Think

        In Python programs, string type is the most common data type. You can use quotation marks (single quotation marks or double quotation marks) to create strings. Creating Python strings is very simple, as long as you assign a value to a variable. As follows: var1 = 'Hello World' #String type variable var2 = "P ...

Summary KMP (invented by Knuth,Morris,Pratt) algorithm with time complexity: T = O ( n + m ) ...

43. String multiplication Give two nonnegative integers in string form   num1   and   Num2, return   num1   and   num2   Their products are also expressed in string form. Example 1: Input: num1 = "2", num2 = "3" Output: "6" Example   2: Input: num1 = "123", num ...