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leetCode OJ 第二题 python解答

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution. Example: Given nums =

Longest Substring Without Repeating Characters Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", whic

26. Remove Duplicates from Sorted Array Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for

27. Remove Element Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with c