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<b>Recursion</b><br />
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Given a string and a non-empty substring sub, compute recursively the largest substring which starts and ends with sub and return its length.<br />
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strDist(&quot;catcowcat&quot;, &quot;cat&quot;) → 9<br />
strDist(&quot;catcowcat&quot;, &quot;cow&quot;) → 3<br />
strDist(&quot;cccatcowcatxx&quot;, &quot;cat&quot;) → 9
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Recursion

Given a string and a non-empty substring sub, compute recursively the largest substring which starts and ends with sub and return its length.

strDist("catcowcat", "cat") → 9
strDist("catcowcat", "cow") → 3
strDist("cccatcowcatxx", "cat") → 9

Can Anyone help me. Please explain the question i cant get it and logic behind it.

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