摘要：
Given a (singly) linked list with head node root, write a function to split the linked list into k consecutive linked list "parts". The length of each 阅读全文
摘要：
Design your implementation of the circular double-ended queue (deque). Your implementation should support following operations: MyCircularDeque(k): Co 阅读全文
摘要：
Given four lists A, B, C, D of integer values, compute how many tuples (i, j, k, l) there are such that A[i] + B[j] + C[k] + D[l] is zero. To make pro 阅读全文
摘要：
We are stacking blocks to form a pyramid. Each block has a color which is a one letter string, like `'Z'`. For every block of color `C` we place not i 阅读全文