In how many ways can 3 letters be chosen from M, N, O, P, Q, R,...
In how many ways can 3 letters be chosen from M, N, O, P, Q, R,
S, assuming that the order of the choices doesn't matter and that
repeats are not allowed?
How many 55-letter code words can be formed from the letters U,
G, S, E, A...
How many 55-letter code words can be formed from the letters U,
G, S, E, A if no letter is repeated? If letters can be repeated?
If adjacent letters must be different?
Suppose that L ={F, H, S, T, I, G, E, R} and N = {3, 1,...
Suppose that L ={F, H, S, T, I, G, E, R} and N = {3, 1, 7}. A
code consists of 3 different symbols selected from L followed by 2
not necessarily different symbols from N. How many different codes
are possible?
(a) Construct a 2−3 tree for the list f,l,o,w,c,h,a,r,t,i,n,g.
Use the alphabetical order of the letters...
(a) Construct a 2−3 tree for the list f,l,o,w,c,h,a,r,t,i,n,g.
Use the alphabetical order of the letters to compare them and
insert them successively starting with the empty tree.
(b) Assuming that the probabilities of searching for each of the
keys (i.e., the letters) are the same, find the largest number and
the average number of key comparisons for successful searches in
this tree.
Full description plz
Consider permutations of the 26-character lowercase alphabet
Σ={a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}.
In how many of these permutations do
a,b,c...
Consider permutations of the 26-character lowercase alphabet
Σ={a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z}.
In how many of these permutations do
a,b,c occur consecutively and in that
order?
In how many of these permutations does a appear before
b and b appear before c?