publicclasslianxi01publicstaticvoidmain(String[]args) System.out.println("第2個月的兔子對數: intf1=1,f2=1,f,M=24;for(inti=3;i<=M;i++){f=f2;f2=f1+f2;f1=f;System.out.println("第i個月的兔子對數}}}2到sqrt(這個數)publicclasslianxi02publicstaticvoidmain(String[]args){intcount=0;for(inti=101;i<200;i+=2){booleanb=false;for(intj=2;j<=Math.sqrt(i);{if(i%j==0){b=false;break;} {b=true;}}if(b==true){count++;System.out.println(i}System.out.println素數個數是}}""""是指一個三位數，其各位數字立方和等于該數本身。例如：153""153=1的三次方＋5的三次方＋3的publicclasslianxi03publicstaticvoidmain(String[]args){intb1,b2,b3;for(intm=101;m<1000;m++){b3=m/100;b2=m%100/10;b1=m% if((b3*b3*b3b2*b2*b2b1*b1*b1mSystem.out.println(m+"是一個水仙花數");}}}}nk，然后按下述步驟完成：(1)n，則說明分解質因數的過程已經結束，打印出即可。nkk+1k的值,import publicstaticvoidmain(String[]args){Scanners=newScanner(System.in); =s.nextInt();intk=2;System.out.print(n+"=");while(k<=n){if(k==n)elseif(n%k==0){System.out.print(k+"*");n=n/k;} }}}題目：利用條件運算符的嵌套來完成此題：學習成績>=90A表示，60-89分之B表示，60C表示。importjava.util.*;publicclasslianxi05{publicstaticvoidmain(String[]args){intx;charScanners=newSystem.out.print(請輸入一個成績x=s.nextInt();grade=x>= :x>= }}的數，此數即為最大公約數，最小公倍數為兩數之積除以最大公約數。*/importpublicclass publicstaticvoidmain(String[]args){ a,b,m;Scanners=newSystem.out.print");a=s.nextInt();System.out.print");b=s.nextInt();deffcd=newdeff();m=cd.deff(a,b);intn=a*b/System.out.println("最大公約數m);System.out.println("最小公倍數:"+n);}}classpublicintdeff(intx,inty){intt;if(x<y){t=x;x=y;y=}while(y!=0)if(x==y)returnx;else{intk=x%y;x=y;y=}}return}}importjava.util.*;publicclasslianxi07{publicstaticvoidmain(String[]args){intdigital=0;intcharacter=0;intother=0;intblank=char[]ch=Scannersc=newScanner(System.in);Strings=sc.nextLine();ch=for(inti=0;i<ch.length;i++){if(ch>='0'&&ch<='9'){digital++;}elseif((ch>='a'&&ch<='z')||ch>'A'&&ch<='Z'){character++;}elseif(ch==''){blank++;}else{other++;}}System.out.println("數字個數System.out.println("英文字母個數character);System.out.println("空格個數:"+blank);:"+}}題目：求s=a+aa+aaa+aaaa+aa...a的值，其中a是一個數字。例如2+22+222 時共有5個數相加)，幾個數相加有鍵盤控制。importjava.util.*;publicclasslianxi08{publicstaticvoidmain(String[]args){longa,b=0,sum=0;Scanners=newSystem.out.print("a");a=s.nextInt();intn=s.nextInt();inti=0;while(i<n){b=b+a;sum=sum+b;a=a*10;++}}}題目：一個數如果恰好等于它的因子之和，這個數就稱為"完數"。例如6=1＋2＋3.編程1000以內的所有完數。publicclasslianxi09publicstaticvoidmain(String[]args)System.out.println("11000");for(inti=1;i<1000;i++){intt=for(intj=1;j<=i/2;j++){if(i%j==0){t=t+}}if(t==i) }}} 1010publicclasslianxi10publicstaticvoidmain(String[]args){doubleh=100,s=100;for(inti=1;i<10;i++){s=s+h;h=h/}"+System.out.println("反彈高度：h}}publicclasslianxi11publicstaticvoidmain(String[]args){intcount=0;for(intx=1;x<5;x++){for(inty=1;y<5;y++){for(intz=1;z<5;z++)if(x!=y&&y!=z&&x!=z){count++;System.out.println(x*100+y*10+z}}}}"++"}}題目：企業(yè)的獎金根據利潤提成。利潤(I)低于或等于10萬元時，獎金可提10%；利潤10201010%10萬元的部分，可可7.5%；2040205%；4060萬之間時高403%；60100601.5%，高于100萬元時，超過100萬元的部分按1%提成，從鍵盤輸入當月利潤，求應獎金總數importjava.util.*;publicclasslianxi12{publicstaticvoidmain(String[]args){doublex=0,y=0;：");Scanners=newScanner(System.in);x=s.nextInt();if(x>0&&x<=10){y=x*0.1;}elseif(x>10&&x<=20)y=10*0.1+(x-10)*}elseif(x>20&&x<=40)y=10*0.1+10*0.075+(x-20)*}elseif(x>40&&x<=60)y=10*0.1+10*0.075+20*0.05+(x-40)*}elseif(x>60&&x<=100)y=20*0.175+20*0.05+20*0.03+(x-60)*}elseif(x>100)y=20*0.175+40*0.08+40*0.015+(x-100)*}System.out.println("y萬}}publicclasslianxi13publicstaticvoidmain(String[]args){for(intx=1;x<100000;x++){if(Math.sqrt(x+100)%1==0)if(Math.sqrt(x+268)%1==0)}}}}}/*按題意循環(huán)應該從-100開始（整數包括正整數、負整數、零importjava.util.*;publicclasslianxi14{publicstaticvoidmain(String[]args){intyear,month,day;intdays=0;intd=0;intinputfymd=newinput();do{e=year=fymd.input();month=fymd.input();day=fymd.input();ifyear0||month0||month12||day0||day31e=1}}while(for(inti=1;i<month;i++){switch(i){casecasecasecasecasecasecasedays=31;case4:casecasecasedays=30;case2:if((year%400==0)||(year%4==0&&year%100!=0))days=}elsedays=}}d+=}System.out.println(yearmonthday是這年的第d+day)天。}}classpublicintinput()intvalue=Scanners=newScanner(System.in);value=s.nextInt();return}}importjava.util.*;publicclasslianxi15publicstaticvoidmain(String[]args){inputfnc=newinput();intx=0,y=0,x=fnc.input();y=fnc.input();z=fnc.input();if(x>y)intt=x;x=y;y=}if(x>z)intt=x;x=z;z=}if(y>z)intt=y=z=}System.out.println"+xy}}classpublicintinput()intvalue=Scanners=newScanner(System.in);value=s.nextInt();return}}9*9publicclasslianxi16publicstaticvoidmain(String[]args){for(inti=1;i<10;i++){for(intj=1;j<=i;j++)System.out.print(j+"*"+i+"="+j*i+" ");if(j*i<10){System.out.print("");}}}}}第二天早上又將剩下的桃子一半，又多吃了一個。以后每天早上都吃了前一天剩下0icclsla7{publicstaticvoidmain(String[]args){intx=1;for(inti=2;i<=10;i++){x=(x+1)*2;}System.out.println("x+"個桃子}}出三隊賽手的。publicclasslianxi18staticchar[]m={'a','b','c'staticchar[]n={'x','y','z'publicstaticvoidmain(String[]args){for(inti=0;i<m.length;i++){for(intj=0;j<n.length;j++){if(m[i]=='a'&&n[j]=='x'){}}}elseif(m[i]=='a'&&n[j]=='y'){}elseif((m[i]=='c'&&n[j]==||(m[i]=='c'&&n[j]=='z')){}elseif((m[i]=='b'&&n[j]==||(m[i]=='b'&&n[j]=='y')){}System.out.println(m[i]+"vs"+}}}}**publicclasslianxi19publicstaticvoidmain(String[]args)intH7W7;//高和寬必須是相等的奇數for(inti=0;i<(H+1)/2;i++){for(intj=0;j<W/2-i;j++){System.out.print("");for(intk=1;k<(i+1)*2;k++){}}for(inti=1;i<=H/2;i++){for(intj=1;j<=i;j++){System.out.print("");}for(intk=1;k<=W-2*i;k++){}}}}publicclasslianxi20publicstaticvoidmain(String[]args){intx=2,y=1,t;doublesum=for(inti=1;i<=20;i++){sum=sum+(double)x/y;t=y;y=x=y+}System.out.println("20}publicclasslianxi21publicstaticvoidmain(String[]args){longsum=0;longfac=for(inti=1;i<=20;i++){fac=fac*i;sum+=}}}5!。publicclasslianxi22{publicstaticvoidmain(String[]args){intn=5;recfr=new}}classpubliclongrec(intn){longvalue=0;if(n==1){value=} value=n*rec(n-}return}}題目：有5個人坐在一起，問第五個人多少歲他說比第4個2歲。問第4個人歲數publicclasslianxi23publicstaticvoidmain(String[]args){intage=10;for(inti=2;i<=5;i++){age=age+2;}}}//18importjava.util.*;publicclasslianxi24{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);longa=s.nextLong();Stringss=Long.toString(a);char[]ch=ss.toCharArray();intj=ch.length;System.out.println(a是一個j位數。for(inti=j-1;i>=0;i--){}}}importjava.util.*;publicclasslianxi25{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);inta;System.out.print("5位正整數：");a=s.nextInt();Stringss=String.valueOf(a);char[]ch=ss.toCharArray();{}}importjava.util.*;publicclasslianxi25apublicstaticvoidmain(String[]args){Scanners=newScanner(System.in);booleanislonga=s.nextLong();Stringss=Long.toString(a);char[]ch=ss.toCharArray();intj=ch.length;for(inti=0;i<j/2;i++)}else{System.out.println("這不是一個回文數");}}} importjava.util.*;publicclasslianxi26{publicstaticvoidmain(String[]args){getChartw=newgetChar();charch=tw.getChar();switch(ch){case'M':casecasecase'T':charch2=tw.getChar();elseif(ch2HSystem.out.println("Thursdayelse{System.out.println("無此寫法！");}case'S':{charch2=tw.getChar();elseif(ch2ASystem.out.println("SaturdayelseSystem.out.println("無此寫法！");}}}}classpublicchargetChar()Scanners=newScanner(System.in);Stringstr=s.nextLine();charch=if(ch<'A'||ch>'Z')}return}}100//sqrt(n)23publicclasslianxi27{publicstaticvoidmain(String[]args){booleanb=false;System.out.print(2+"System.out.print(3+"");for(inti=3;i<100;i+=2){for(intj=2;j<=Math.sqrt(i);j++){if(i%j==0){b=false;}else{b=}if(b==true){System.out.print(i+"}}}//12publicclasslianxi27apublicstaticvoidmain(String[]args){int[]a=newint[]{2,3,5,7};for(intj=0;j<4;j++)System.out.print(a[j]+"booleanbfor(inti=11;i<100;i+=2){for(intj=0;j<4;j++){if(i%a[j]==0){b=}else{b=}if(b==true){System.out.print(i+"}}}10importjava.util.*;publicclasslianxi28{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);int[]a=newSystem.out.println("10個整數：");for(inti=0;i<10;i++){a[i]=}for(inti=0;i<10;i++){for(intj=i+1;j<10;j++){if(a[i]>a[j]){intt=a[i];a[i]=a[j];a[j]=t;}}}for(inti=0;i<10;i++)System.out.print(a[i]+"}}}題目：求一個3*3矩陣對角線元importjava.util.*;publicclasslianxi29{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);int[][]a=newint[3][3];for(inti=0;i<3;i++){for(intj=0;j<3;j++){a[i][j]=s.nextInt();}}System.out.println("3*3矩陣是:");for(inti=0;i<3;i++){for(intj=0;j<3;j++)}}intsum=for(inti=0;i<3;i++){for(intj=0;j<3;j++){if(i==j){sum+=}}}"+}}importjava.util.*;publicclasslianxi30publicstaticvoidmain(String[]args)int[]a=newint[]{1,2,6,14,25,36,int[]b=newint[a.length+1];intt1=0,t2=0;intiScanners=newScanner(System.in);intnum=s.nextInt();if(num>=a[a.length-1]){b[b.length-1]=num;for(i=0;i<a.length;i++){b[i]=a[i];}}elsefor(i=0;i<a.length;i++){if(num>=a[i]){b[i]=}elseb[i]=num;}}for(intj=i+1;j<b.length;j++){b[j]=a[j-1];}}for(i=0;i<b.length;i++){System.out.print(b[i]+"");}}}importjava.util.*;publicclasslianxi31{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);inta[]=newint[20];：");inti=0,j;for(j=0;j<i-1;j++){ }System.out.println("\n數組逆序輸出為：");for(j=i-2;j>=0;j=j-1){ }}}a4～7importjava.util.*;publicclasslianxi32publicstaticvoidmain(String[]args){Scanners=newlonga=s.nextLong();Stringss=Long.toString(a);char[]ch=ss.toCharArray();intj=ch.length;(else}}}題目：打印出三角形（要求打印出10行如下圖1 publicclasslianxi33publicstaticvoidmain(String[]args){int[][]a=newint[10][10];for(inti=0;i<10;i++){a[i][i]=1;a[i][0]=}for(inti=2;i<10;i++){for(intj=1;j<i;j++){a[i][j]=a[i-1][j-1]+a[i-}}for(inti=0;i<10;i++)for(intk=0;k<2*(10-i)-1;k++)}for(intj=0;j<=i;j++) }}}}3a,b,c，按大小順序輸出。importjava.util.Scanner;publicclasslianxi34publicstaticvoidmain(String[]args)Scanners=newSystem.out.println("3個整數：");inta=s.nextInt();intb=s.nextInt();intc=if(a<b){intt=a;a=b=}if(a<c){intt=a;a=c;c=}if(b<c){intt=b=c=}System.out.println(a+""+b+""+c);}}importjava.util.*;publicclasslianxi35{publicstaticvoidmain(String[]args){intN=8;int[]a=newintScanners=newScanner(System.in);intidx1=0,idx2=0;for(inti=0;i<N;i++){a[i]=s.nextInt();}for(inti=0;i<N;i++){System.out.print(a[i]+"}intmax=a[0],min=a[0];for(inti=0;i<N;i++){if(a[i]>max){max=a[i];idx1=i;}if(a[i]<min){min=a[i];idx2=}}if(idx1!=0)inttemp=a[0];a[0]=a[idx1];a[idx1]=}if(idx2!=N-1)inttemp=a[N-1];a[N-1]=a[idx2];a[idx2]=}System.out.println("\n交換后的數組為：");for(inti=0;i<N;i++){System.out.print(a[i]+"}}}importjava.util.Scanner;publicclasslianxi36{publicstaticvoidmain(String[]args){intN=10;int[]a=newScanners=newSystem.out.println("10個整數：");for(inti=0;i<N;i++){a[i]=}for(inti=0;i<N;i++){System.out.print(a[i]+"}System.out.print("\n請輸入向后移動的位數：");intm=s.nextInt();int[]b=newint[m];for(inti=0;i<m;i++){b[i]=a[N-m+i];}for(inti=N-1;i>=m;i--)a[i]=a[i-}for(inti=0;i<m;i++){a[i]=b[i];}for(inti=0;i<N;i++){System.out.print(a[i]+"}}}n個人圍成一圈，順序排號。從第一個人開始報數（13報數3的importjava.util.Scanner;publicclasslianxi37{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);intn=boolean[]arr=newboolean[n];for(inti=0;i<arr.length;i++){arr[i]=true;}intleftCount=intcountNum=0;intindex=0;while(leftCount>1)if(arr[index]==true)countNumif(countNum==3){countNum=0;arr[index]=false;leftCount--;}}indexif(index==n){index=0;}}for(inti=0;i<n;i++){if(arr[i]==true){}}}}*……題目意思似乎不能用length()函數 importjava.util.*;publicclasslianxi38publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);Stringstr=}}1/1+1/3+...+1/n(利用指針函數)importjava.util.*;publicclasslianxi39{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);System.out.print("nintn=s.nextInt();"+}publicstaticdoublesum(intn){doubleres=0;if(n%2==0)for(inti=2;i<=n;i+=2){res+=(double)1/i;}}elsefor(inti=1;i<=n;i+=2){res+=(double)1/i;}}return}}publicclasslianxi40publicstaticvoidmain(String[]args){intN=5;Stringtemp=String[]s=newString[N];s[0]="matter";s[1]=s[2]=s[3]=s[4]=for(inti=0;i<N;i++){for(intj=i+1;j<N;j++){if(compare(s[i],s[j])==false){temp=s[i];s[i]=s[j];s[j]=temp;}}}for(inti=0;i<N;i++)}}staticbooleancompare(Strings1,Strings2){booleanresult=true;for(inti=0;i<s1.length()&&i<s2.length();i++){if(s1.charAt(i)>s2.charAt(i)){result=false;}elseif(s1.charAt(i)<s2.charAt(i))result=true;}elseif(s1.length()<s2.length()){result=true;}elseresult=}}}return}}publicclasslianxi41publicstaticvoidmain(String[]args){inti,m,j=0,k,count;{count=0;{else}{System.out.println(""+j+"個");}}}題目 其中代表的兩位數 的結果3位數。求代表的兩位數，及 //題目錯了！809x=800x+9x+11publicclasslianxi42publicstaticvoidmain(String[]args){inta=809,b,i;{b=i*a}}//14//27*4//37*8*4//47*8*8*4publicclasslianxi43publicstaticvoidmain(String[]args){intsum=4;intSystem.out.println("1"+sum+"個");System.out.println("2"+sum+"個");System.out.println("組成"+j+""+sum+"個}}}importjava.util.*;publicclasslianxi44publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);intn,i;System.out.print("6的偶數：");n=s.nextInt();} funfc=new{intj=n-System.out.println(n+"="+i+"+}}}classpublicintfunint {intif(a%i==0){flag=0;break;}else(}}//importjava.util.*;publicclasslianxi44publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);intn;System.out.print("6的偶數：");n=s.nextInt();} for(inti=3;i<=n/2;i+=2){if(fun(i)&&fun(n-i)){System.out.println(n+"="+i+"+"+(n-}}staticbooleanfun(inta){ booleanflag=false;for(intif(a%i==0){flag=false;break;}elseflag=true;}return(flag)}}9//9importjava.util.*;publicclasslianxi45{publicstaticvoidmain(String[]args){Scanners=newScanner(System.in);intnum=s.nextInt(); tmp=num;intcount=0;for(inti=0;tmp%9==0;){tmp=tmp/9;count}System.out.prin