Real question 872 of computer postgraduate entrance examination of Soochow University in 2021 -- data structure

Qi Guanjie 2021-01-05 17:24:23
real question postgraduate entrance examination


2021 Suzhou University Computer postgraduate entrance examination professional course 872 The real question — Data structure part

2021 Suzhou University Computer postgraduate entrance examination professional course 872 The real question — Data structure part

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One 、 Data structure part

1. choice question .

Multiple choice questions are really hard to recall the specific topic data , Just write down the investigation points of each question here .

  1. After the tree is transformed into a binary tree , The relationship between nodes .
  2. Unordered list , And you need to sort it steadily , Make a selection : Quick line up 、 Merger 、 Simple choice 、 Insertion sort
  3. Dijkstra Find the shortest path
  4. Binary tree : Parents are no bigger than children , The left child is no bigger than the right child , Seek to use 1-n How many forms are there ,n take 1,2,3,4 when
  5. How to judge the balance of a balanced binary tree after it is inserted into a node

2. Judgment questions

  1. Suffix expressions need stacks to store operators .
  2. The height is h There are at most 2 Of h-1 To the power of a leaf node
  3. The degree of the last node in topological sorting must be 0
  4. n A vertex undirected graph , The edge just loops , Then there are n-1 Spanning trees

3. A recursive algorithm , Pairs of implementation of reverse single linked list , Such as 1-2-3-4-5 Turn into 2-1-4-3-5.

4. Gas station problems . Array A[1……n ] For the journey that needs to be consumed ,A[i] For the first time i-1 To the first i The path of , The car can be driven with full gas d, In the initial test, the fuel volume of the car is full . Ask for as little gas as possible , And return to the gas station array .

5. Calculate the path length of the binary tree , The sum of the lengths of the nodes to each .

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