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Leetcode – Robot Return To Origin Problem: Solution in Javascript and PHP

Robot Return To Origin Problem: Solution in Javascript and PHP

  Question There is a robot starting at position (0, 0), the origin, on a 2D plane. Given a sequence of its moves, judge if this robot ends up at (0, 0) after it completes its moves. The move sequence is represented by a string, and the character moves[i] represents its ith move. Valid moves are R …

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The Longest Common Prefix Amongst An Array of Strings – Implementation in Javascript and PHP

Today, we’ll take a look at another easy problem on leetcode, finding the longest common prefix string amongst an array of strings. Question Write a function to find the longest common prefix string amongst an array of strings. If there is no common prefix, return an empty string “”. Example 1:

Example 2:

Note: …

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