medium10 pts · first answer countsarrayssliding-windowstrings

When to shrink in minimum window substring

In "minimum window substring" (smallest window of s containing all characters of t), when do you move the left pointer?

A.Whenever the window length exceeds t.lengthB.Whenever a character not in t entersC.While the window still contains every needed characterD.Only after right reaches the end of s

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When to shrink in minimum window substring

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