Coding style

Lintcode to check your coding style.

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zhitongguigu

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Array Part2

Two pointers 977 Squares of a Sorted Array      We can use two pointers to read the positive and negative parts of the array - one pointer  j  in the positive direction, and another  i  in the negative direction. Now that we are reading two increasing arrays (the squares of the elements), we can merge these arrays together using a two-pointer technique. 11 Container With Most Water      O(N) time and O(1) space, since better candidadates must use the taller line of l and r therefore we can use two pointer keep moving towards each other until they meet. Always abandon the shorter line while moving. 80 Remove Duplicates from Sorted Array II      tail = 0; for (int i = 0;  i < nums.size(); i++)           if (i < 2 || nums[i] > nums[tail - 2]) // not included twice yet                 nums[tail++] = nums...
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Two pointers (Part 1)

344 Reverse String      Use two pointers i, j. keep switching elements at position i, j while i < j.     string reverseString(string s) {        for (int i = 0, j = s.size() - 1; i < j; i++, j--)            swap(s[i], s[j]);                  return s;     } 345 Reverse Vowels of a String      Similar with 344  Reverse String ,  except we need to guard the swap operation conditionally based on whether the current two chars are vowels or not. 283 Move Zeroes      Use two pointers, the front iterates the elements in the array. while the tail one keeps the current store position. If front is not zero, store it to the tail position and increase tail pointer. After the loop, set all the remaining with zero. 349 Intersection of Two Arrays      ...
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