课程: Java Algorithms

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Create algorithm-driven strings in Java

Create algorithm-driven strings in Java - Java教程

课程: Java Algorithms

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Create algorithm-driven strings in Java

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- [Instructor] Another standard programming task is to create a new string based on input data. We've seen this a bit previously with toLowerCase and replace. For each of these, a string is inputted in the function and a new string is created using the data from this input string. These are built into the standard library but let's try creating our own functions that build a string dynamically using input data. The algorithm we'll create will build the reverse of whatever string is inputted. It will reverse the string. We'll start by covering our base cases. This is when the string is null or the string is empty. In these cases, we'll just return the input string. Now, let's reverse the string. When performing operations on strings, it can be very easy to create a bunch of unnecessary strings as you try to build this output string. This happens because string are immutable. You can't change them once they're created. To make our algorithm more efficient so that it doesn't create this…

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