These days there are tons of problems on string transformation. I don't know any particular way to solve them... sometimes guessing works but surely that's not a good way. So I was wondering if there is any general method to attempt such problems, please share.
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One of methods is connected with graphs. Try to depict letters as vertices and connections between them as nodes. Then run bfs/dfs and in many cases it's enough to solve 1500-1600 difficulties problems.
Thank you very much. Is there any source on which I can understand it better..
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Well, you can try these tasks, based on dsu and topological sort, hidden behind strings, which are extremely important techniques: 510C - Fox And Names, 638B - Making Genome in Berland, 939D - Love Rescue, 1384C - String Transformation 1