Shell script for combinations ncr, Programming Languages

Assignment Help:

 Find nCr.

 Program

echo -e  "Enter n: \c"

read n

echo -e "Enter r: \c"

read r

i=2

nf=1

temp=`expr $n - $r`

tf=1

rf=1

ncr=1

while test $i -le $n

do

   nf=`expr $nf\*$i`

   i=`expr $i + 1`

done

 

nf=`echo "$nf" | bc`

i=2

while test $i -le $temp

do

  tf=`expr $tf\*$i`

  i=`expr $i + 1`

done

tf=`echo "$tf" | bc`

 

i=2

while test $i -le $r

do

  rf=`expr $rf\*$i`

  i=`expr $i + 1`

done

rf=`echo "$rf" | bc`

temp2=`echo "$nf / $tf" | bc`

ncr=`echo "$temp2 / $rf" | bc`

echo "nCr = $ncr"


Output

sh ncr.sh

Enter n: 5

Enter r: 4

nCr = 5

 

sh ncr.sh

Enter n: 9

Enter r: 4

nCr = 126

 

sh ncr.sh

Enter n: 12

Enter r: 5

nCr = 792


Related Discussions:- Shell script for combinations ncr

Draw the sequence diagram for the scenario, Draw the sequence diagram for t...

Draw the sequence diagram for the following scenario of eBroker. Sell Stock The user enters the username and password The system checks that the user is a valid user

Shell script to check a given number is palindrome or not, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Formulas, how do I change a existing formula with a new formula and it show...

how do I change a existing formula with a new formula and it show the result

NETLOGO , THERE IS ANY1 COULD HELP ME WITH NETLOGO WORK

THERE IS ANY1 COULD HELP ME WITH NETLOGO WORK

Get back data from database by user as search, i have a database having fie...

i have a database having field name title and comm. I want to search by name and get the all data remaining title and comm(comm is integer)

Shell script delete all lines from file contains word mca, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Non empty string - minimal unique substring, A non-empty string is called a...

A non-empty string is called a minimal unique substring of s if and only if it satisfies: (i) α occurs exactly once in s (uniqueness), (ii) all proper prefixes of occur at le

Applications of oop, Applications of OOP, The promising areas for applicati...

Applications of OOP, The promising areas for application of OOP include: Real-time systems Simulation and modelling Object-oriented databases Hypertext, hype

Amen, Write a program that inputs two positive integers of, at most, 20 dig...

Write a program that inputs two positive integers of, at most, 20 digits and outputs the sum of the numbers. If the sum of the numbers has more than 20 digits, output the sum with

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd