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The figure shows the tree view of directories in Windows File Explorer. When a file is selected, there is a file path shown in the above navigation ba 阅读全文
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A substring is a continuous part of a string. A subsequence is the part of a string that might be continuous or not but the order of the elements is m 阅读全文
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The Fibonacci sequence Fn is defined by Fn+2=Fn+1+Fn for n≥0, with F0=0 and F1=1. The closest Fibonacci number is defined as the Fib 阅读全文