數(shù)據(jù)結(jié)構(gòu)計(jì)算機(jī)科學(xué)與技術(shù)

1、-. z.數(shù)據(jù)構(gòu)造計(jì)算機(jī)科學(xué)與技術(shù)本科第一局部客觀題一、單項(xiàng)選擇每題2分，共20分1、設(shè)n為正整數(shù)。則下面程序段的時(shí)間復(fù)雜度為_(kāi)。k=0; for(i=1;i=n;i+) for(j=i;jne*t;q = head;while (p != NULL & p-data ne*t;p = (ListNode *)malloc(sizeof(ListNode);p-data = *;p-ne*t = q-ne*t;q-ne*t = p;2、假設(shè)將循環(huán)隊(duì)列定義為：以整型域變量front和length分別指示循環(huán)隊(duì)列中隊(duì)頭元素位置和隊(duì)列中元素個(gè)數(shù)，指針elem指示存放隊(duì)列元素的連續(xù)空間的首地址，寫出相

2、應(yīng)的入隊(duì)列和出隊(duì)列的算法。typedefcharQElemType;typedefstructQElemTypeelemMA*QSIZE;intlength;intrear;CLenQueue;StatusEnCQueue(CLenQueue&Q,QElemType*)if(Q.length=MA*QSIZE)returnERROR;/循環(huán)隊(duì)列滿if(MA*QSIZE-1!=Q.rear)+Q.rear;Q.elemQ.rear=*;else/rear指向循環(huán)隊(duì)列的末尾時(shí)，作特殊處理使其構(gòu)成循環(huán)Q.rear=0;Q.elemQ.rear=*;+Q.length;/當(dāng)前元素個(gè)數(shù)+1returnO

3、K;StatusDeCQueue(CLenQueue&Q,QElemType&*)if(!Q.length)returnERROR;/循環(huán)隊(duì)列空if(Q.rear+1=Q.length)/當(dāng)rear的下標(biāo)大于對(duì)頭指向的下標(biāo)時(shí)*=Q.elemQ.rear+1-Q.length;else/當(dāng)rear的下標(biāo)小于隊(duì)頭下標(biāo)時(shí)*=Q.elemMA*QSIZE+Q.rear+1-Q.length;-Q.length;/當(dāng)前元素個(gè)數(shù)-1returnOK;#include#include#defineQUEUE_SIZE10/*循環(huán)隊(duì)列構(gòu)造體*/typedefstructintfront;/*隊(duì)列頭*/intr

4、ear;/*隊(duì)列尾*/intlength;/*記錄隊(duì)列元素個(gè)數(shù)*/intdataQUEUE_SIZE;/*存放隊(duì)列元素值的數(shù)組*/CirQueue;/*初始化隊(duì)列*/voidinitQueue(CirQueue*Q)Q-front=Q-rear=0;Q-length=0;/*判斷隊(duì)列是否為空*/intQueueEmpty(CirQueue*Q)returnQ-length=0;/*判斷隊(duì)列滿*/intQueueFull(CirQueue*Q)returnQ-length=QUEUE_SIZE;/*入隊(duì)列*/voidEnQueue(CirQueue*Q,intdata)if(QueueFull(

5、Q)printf(隊(duì)列已經(jīng)滿了.n);Q-length+;/*隊(duì)列元素個(gè)數(shù)加1*/Q-dataQ-rear=data;/*將新元素插入隊(duì)尾*/Q-rear=(Q-rear+1)%QUEUE_SIZE;/*將隊(duì)尾加1*/*出隊(duì)列*/intDequeue(CirQueue*Q)inttemp;if(QueueEmpty(Q)printf(隊(duì)列已經(jīng)為空!n);temp=Q-dataQ-front;Q-length-;/*隊(duì)列元素個(gè)數(shù)減1*/Q-front=(Q-front+1)%QUEUE_SIZE;/*隊(duì)列頭加1*/returntemp;/*測(cè)試程序*/intmain()CirQueueQ;intinput=0;/*入隊(duì)數(shù)據(jù)，由用戶輸入*/*初始化隊(duì)列*/initQueue(&Q);printf(請(qǐng)輸入入隊(duì)數(shù)據(jù):n);/*入隊(duì)操作*/while(!QueueFull(&Q)scanf(%dn,&input);EnQueue(&Q,input)