How many os are there?

965

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with these names could be kept in that shelf as in this example: bottom of shelf ---> [AAAJKRDFDEWAAYFYYKK]-----Top of shelf. All these packets are to be loaded on cars. The cars are lined in order, so that the packet could be loaded on them. The cars are also named [A, B, C, D, E,………….]. Each Car will load the packet with the same alphabet. So, for example, car ‘A’ will load all the packets with name ‘A’. Each particular car will come at the loading point only once. The cars will come at the loading point in alphabetical order. So, car ‘B’ will come and take all the packets with name ‘B’ from the shelf, then car ‘C’ will come. No matter how deep in the shelf any packet ‘B’ is, all of the ‘B’ packets will be displaced before the ‘C’ car arrives. For that purpose, some additional shelves are provided. The packets which are after the packet B, are kept in those shelves. Any one of these shelves contains only packets, having the same name. For example, if any particular shelf is used and if a packet with name X is in it, then only the packets having names X will be kept in it. That shelf will look like [XXXXXXX]. If any shelf is used once, then it could be used again only if it is vacant. Packets from the initial shelf could be unloaded from top only. Write a program that finds the minimum total number of shelves, including the initial one required for this loading process.

2190

How to create a single index for multiple columns?

1037

What is cross table?

3

Explain the procedure of smooth muscle cell culture ?

1853

What is Apache Hadoop?

856

Do Audit history maintained for enabling and disabling field level security by setting 'IsSecured' on a field?

923

How can I protect myself? : java security

1009

What is a volatile variable in c++?

1474

How to drop an existing stored procedure in ms sql server?

1032

Explain a/b testing in terms of google analytics.

161

i measured a 3-ph capacitor with a multimeter which is not connected to supply... but i could get the phase to phase voltage... how tis is possible..????

1855

how do I display all logical volumes that are part of a volume group (e,g, rootvg)?

5

how to convert .db (extention) database file into .dmp (extention ) for oracle database ?

2555

What is heat treatment?

1048