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#two-pointers

Articles tagged with #two-pointers

Leetcode 2441. Largest Positive Integer That Exists With It's Negative
Intuition Sort the array and check if the start and end of the array match. If not, increment or decrement accordingly. Approach First sort the array. Then use two pointers. One at the beginning, the other at the end. Check to see if the value at the...
May 3, 20241 min read6
Leetcode 2000 Reverse Prefix of Word
Intuition Find position of ch (if any) then use two pointers to swap characters until string is reveresed from beginning to index of ch Approach Start by checking each character for ch. If we find it, that's where our right pointer will start. Our le...
May 1, 20241 min read14

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