Options :
A.) s1 < s2
B.) s1 <= s2
C.) s1.compareTo(s2) == −1
D.) s2.compareTo(s1) < 0
E.) s1.compareTo(s2) < 0
Answer: E.) s1.compareTo(s2) < 0
Explanation: Lexicographical ordering simply means the arrangement of strings based on the how the alphabets or letters of the strings appear. It could also be explained as the dictionary ordering principle of words based on the arrangement of the alphabets. In making lexicographical comparison between strings, the compareTo () method may be employed using the format below.
If first string = s1 ; second string = s2
To compare s1 with s2, the format is ;
s1.compareTo(s2) ;
If s1 comes first, that is, before s2, the method returns a negative value, that is a value less than 0 '< 0', which is the case in the question above.
If s2 comes first, that is, before s1, the method returns a positive value, that is a value greater than 0 '> 0'.
If both are s1 and s2 are the same, the output will be 0.
Answer:
Windows utility program.
Explanation:
The operating system is a software used to manage the activities of various parts of the computer system. It acts as a link between the hardware, application software and the user. An example of OS is the Windows OS.
It has the kernel program that directly connects the hardware to the operating system. It provides utility programs to analyse, optimise, control and maintain devices running in the system.
Window utility program is an example of utilities in OS, used to analyse, control, optimise and maintain device and software activities for good system performance.
An example of the windows utility program is the disk defragmenter used to eliminate fragments and rearrange files and unused disk space.
Answer:time-sensitive email
Answer:
For undirected graph n(n-1) for directed graph 
Explanation:
The maximum number of edges for a undirected graph is given by 
, where n is number of vertices
The maximum number of edges in directed graph is given by , where n is number of vertices
The maximum number of edges is greater in undirected graph than directed graph
Answer:
piping and instrumentation drawings (P&IDs)
Explanation:
schematic drawings showing all the equipment, pipelines, valves, instruments, and controls needed to operate a piping system
