Given several boxes with different colors represented by different positive numbers. You may experience several rounds to remove boxes until ...
Given a C program, remove comments from it. The program source is an array where source i is the i th line of the source code. This represents the result of splitting the original source code string ...
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Given several boxes with different colors represented by different positive numbers. You may experience several rounds to remove boxes until ...
Start from integer 1, remove any integer that contains 9 such as 9, 19, 29... So now, you will have a new integer sequence ...
Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure ...
Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space ...
Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure ...
Remove all elements from a linked list of integers that have value val. Example Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> ...
Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results. Note: The input string may ...
Given a linked list, remove the nth node from the end of list and return its head. For example, Note: Given n will always be valid. Try to do ...