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docs(hiddenp) fix subject of hiddenp
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### Instructions
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### Instructions
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Write a program named `hiddenp` that takes two `string` and that, if the first `string` is hidden in the second one, displays `1` followed by a newline (`'\n'`), otherwise it displays `0` followed by a newline.
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Write a program named `hiddenp` that takes two `strings` as arguments. The program should check if the first string `s1` is hidden in the second `s2`.
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`s1` is considered hidden in `s2` if it is possible to find each character from `s1` in `s2`, in the same order as they appear in `s1`, but not necessarily consecutively.
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Let s1 and s2 be `string`. It is considered that s1 is hidden in s2 if it is possible to find each character from s1 in s2, **in the same order as they appear in s1.**
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- If `s1` is hidden in `s2`, the program should display `1` followed by a newline.
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- If `s1` is not hidden in `s2`, the program should display `0` followed by a newline.
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If s1 is an empty `string`, it is considered hidden in any `string`.
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- If `s1` is an empty string, it is considered hidden in any string.
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- If the number of arguments is different from 2, the program should display nothing.
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If the number of arguments is different from 2, the program displays nothing.
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### Usage
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### Usage
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