Answer:
Check for similar problems from other resources
Step-by-step explanation:
An algorithm is defined as the sequence of a well defined instructions that can be implemented in a computer in order to solve a problem or do computation in the computer.
If I am writing an algorithm and the algorithm seems to be complex and I am not confident enough to understand the problem, then I would look for other similar problems in other books or resources and then understand them first. This would give me an idea what the problem is how to solve it using algorithm in a computer. I can also gather other information or data for a reliable prediction.