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Practice Problems

 

Programming Examples

 

 

                                                

 

Practice Problems

Solve each problem for 't'

 

  1. int t=0;

for (int a=1; a<=6; a++)

     t = t + a;

     t = t + 4;                              t=25

 

  1. int t=2, a=4, b=7;

do

          {

            t=t+a*b;

            a++;

            b+=2;

           } while (b<12)                   t=141

 

  1. int t=0, a, b, c, d;

for (a=1;a<=4;a++)

{

  for (b=4;b>=0;b--)

  {

    if (a==b) t=t+2;

        else t=t+3;

   t++;

 }

t=t+3;

           }                                               t=88

 

  1. int a,b,c,d,t;

a=4;b=7;c=10;t=0;

t=(a%3) * (c/b) + b*a;             t=29

 

 5.   int a,b,c,d,t;

t=0;d=4;

for (a=1;a<7;a+=2)

{

  t=t+a%3

  t -=3;

  for (b=1;b<=a;b++)

  {

    t=t+b;

    if (b<2) t++;

        else

              {

                t++;

                d=d+2;

               }

        t=t+a;

  }

  t=t+a;

 }                                             t=69

 

  1. int n[]=new int [10];

int t=0;

int a,b,c,d;

d=3;

for (a=0; a<=9;a++)

{

  n[a]=d;

  d=d+2;

}

            for (c=1; c<=9;c=c+2)

                  t=t+n[c];                             t=65

 

  1. int t=0;

String cat = “123ABC4512”;

int a=cat.indexOf(“3”,3);

int b=cat.indexOf(“1”,0);

b=b%3;

t=t+a*b;                                   t=  -3

 

  1. int t,a,b,c;

t=0;

for (a=1;a<4;a++)

     {

       for (b=1;b<4;b++)

            {

              for (c=1;c<5;c++)

                   {

                      t=t+c;

                      t++;

                    }

            }

         t=t+a;

      }                                        t=132

  

ADVANCED PRACTICE PROBLEMS

    Answers to first 30 problems

1. t = 8
2. t = 10
3. t = 20
4. t = -48
5. t = -42
6. t = 18
7. t = 228
8. t = 140
9. t = 54
10. t = 216
11. t = 220
12. t = 190
13. t = 182
14. t = 38
15. t = 24
16. t = 22
17. t = 65
18. t = 15
19. t = 12
20. t = 34
21. t = 10
22. t = 16
23. t = 24
24. t = 46
25. t = 41
26. t = 96
27. t = 42
28. t = 49
29. t = 38
30. t = 150
31. t=700
32. t=1625
33. t=125
34. t=575
35. t=650
36. t=535
37. t=-630

1.      int a,t;
t=0;
for(a=1;a<5;a=a+1)
   t=t+2;                           

2.      int a,t;
t=0;
for(a=1;a<5;a=a+1)
   t=t+a;                           

3.      int a,t,c;
t=0;  c=2;
for(a=1;a<5;a=a+1)
   t=t+a*c;                       

4.      int a,t,c;
t=0;  c=3;
for(a=1;a<=7;a=a+2)
   t=t-a*c;                       

5.      int a,t.c;
t=0;  c=-2;
for(a=5;a<=10;a=a+2)
   t=t+a*c;                       

6.      int a,t,c;
t=0;  c=2;
for(a=5;a<=10;a=a+2)
   t=a*c;                          

7.      int a,t.c;
t=0;  c=4;
for(a=12;a>6;a=a-1)
   t=t+a*c;                      

8.      int a,t.c;
t=0;  c=4;
for(a=12;a>=6;a=a-2)
   t=t+a*c-1;                  

9.      int a,t.c,f;
t=0;  c=4; f=3;
for(a=f;a<=6;a=a+1)
   t=t+a*f;                        

10.  int a,t.c,f,g;
t=0;  c=4; f=3; g=9;
for(a=f;a<=g;a=a+2)
   t=t+a*g;                      

11.  int a,t.c,f,g;
t=0;  c=4; f=3; g=9;
for(a=f;a<=g;a=a+2)
{  
t=t+a*g;
t++;                                  
}

12.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=f;a=a+1)
  {  
     t=t+a*g;
     t=t+2;                          
  }

13.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=f;a=a+1)
  {  
     t=t+a*g;
     if(a==f)
          t=t+2;                      
  }

14.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=6;a=a+1)
  {  
     t=t+a;
     if(a<3)
          t=t+2;
         else
          t=t+4;                      
  }

15.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=7;a=a+2)
  {  
     t=t+a;
     if(a>=3)
          t=t+2;
         else
          t=t+5;
          t++;                          
  }

16.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=7;a=a+2)
  {  
     t=t+a;
     if(a>=3)
          t=t+2;
         else
         {
          t=t+5;
          t++;
          }
  }

17.  int a,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=7;a=a+2)
  {  
     t=t+a;
     if(a<=3)
          {
            t=t+2;
            g=g-1;        
           }
else
         {
          t=t+g;
          t++;
          }
    t=t+11;
  }

18.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=7;a=a+2)
  {  
     t=t+1;

                           for(b=2;b<4;b=b+1)
                             t=t+2;
                         }

 

19.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=2;a<=7;a=a+2)
  {  
     t=t+1;

                           for(b=2;b<4;b=b+1)
                             t=t+2;
                           t=t-1;
                         }

20.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=c;a<=7;a=a+1)
    t=t+g;

                    for(b=2;b<4;b=b+1)
                         t=t+2;
                         t=t-f;

 

    

21.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<4;a++)

{
   for(b=1;b<=a;b++)

                              t+=b;
                         }

22.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<4;a++)

{
   for(b=1;b<=a;b++)

                              t+=b;
                              t=t+a;
                         }

23.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=3;a++)

{
   for(b=1;b<=a;b++)

                              {
                                 t+=b;
                                 t=t+a;
                               }
                         }

24.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=3;a++)

{
   for(b=a;b<=5;b++)

                              {
                                 t+=2;
                                 t=t+a;
                               }
                         }

25.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=3;a++)

{
   t=t+a;  
   for(b=a;b>=0;b--)

                              {
                                 t+=2;
                                 t=t+a;
                               }
                         t=t-1;
                         }

26.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=4;a++)

      {
         for(b=1;b<4;b++)
           {
               for(c=1;c<5;c++)
                 t=t+2;
            }
       }

27.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=4;a++)

        {
         for(b=1;b<4;b++)
           {
               t++;
               if(a == b)

             {
                 for(c=1;c<5;c++)
                   t=t+c;

              }
            }
          }

28.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=4;a++)
   for(b=a;b<4;b++)
      for(c=b;c<5;c++)

                t=t+c;

29.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=4;a++)
   for(b=4;b>=0;b=b-1)
      {
          if (a==b) t=t+2;
            else t=t+b;
       }

30.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=1;a<=4;a++)
   for(b=4;b>=0;b=b-1)
     for(c=a;c<=b;c++)
       t=t+a+b+c;

 

IN ALL THE PROBLEMS BELOW, ASSUME THAT n IS AN
ARRAY THAT IS INT AND 5 BY 5 BIG AND ALREADY CONTAINS THE FOLLOWING VALUES:

    5, 10 ….25  in row 0

     30, 35…50 in row 1

     55,60….75 in row 2

     80, 85….100 in row 3

     105,110..125 in row 4

 

31.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=0;a<=4;a++)

         t=t+n[a][2] +n[a][4];

32.   int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
for(a=0;a<=4;a++)
   for(b=0;b<=4;b++)
      t=t+n[a][b];

33.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
int hogh=0;
for(a=0;a<=4;a++)
  {
      for(b=0;b<=4;b++)
         {
              if(n[a][b] > high)
                    high=n[a][b];
         }
    }
t = high;

34.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
int hogh=0;
for(a=0;a<=4;a++)
  {
     t+=n[a][0] + n[a][4]-n[0][a];
   }

35.  int a,b,t.c,f,g;
t=0;  c=4; f=6; g=9;
int hogh=0;
for(a=0;a<=4;a++)
 t+=n[a][a] +n[a][4-a];

36. int n[][]=new int[10][10];
int t,a,b,c,d;
t=0; c=4;
for (a=0;a<=9;a++)
     {
       for (b=0;b<=9;b++)
            {
              n[b][a]=c;
              c++;
            }
     }
for (c=0;c<=9;c++)
     t=t+n[c][c];       

37. int a,b,c,d,e,t;
t=0;a=4;b=6;c=10;
int n[][]=new int[10][10];
int g[] = new int [10];
   
for ( int r=0;r<=9;r++)
     {
       g[9-r] =b-a;
       for (int f=9;f>=0;f--)
           {
             g[9-r] =g[9-r] + 1;
             n[f][r] = b;
             b++;
            }
     }
for ( int aa=0;aa<=9;aa=aa+3)
     {
       for (int bb=0;bb<=9;bb++)
            n[aa][bb]=n[bb][aa] + g[bb];
     }
for ( int ss=0; ss<=9; ss++)
      t=t+n[ss][ss]-n[9][ss];