REVISION LIST PRACTICE - 21 AUG

 

REVISION LIST PRACTICE 

GRADE XI

1.#LINEAR SEARCH/search for an element in a given list

list1=eval(input("Enter the List elements"))

length=len(list1)

element=int(input("Enter the element to be searched for")) 

for i in range(0,length):

    if element==list1[i]:

        print("Element found At Index:",i)

        break

else:

    print(element,"Not present in the list")

2.#[45,66,20,77,20]

#REPLACE [ALL 2 WITH 20 IN A LIST]

a=[1,2,2,1,4,5,1]

for i in range(len(a)):

    if a[i]==2:

        a[i]=20

print(a)

3. #PROGRAM TO CALCULATE MEAN OF A GIVEN LIST NUMBERS

list1=eval(input("Enter the List elements"))

length=len(list1)

mean=sum=0

for i in range(0,length):

    sum+=list1[i]

mean=sum/length

print("Given List is:",list1)

print("Mean of Given List is:",mean)

4.#ADDITION OF ELEMENTS

list1=[4,5,6,6]

list2=[1,2,3,4]

print("ORIGINAL LIST1 IS:"+str(list1))

print("ORIGINAL LIST2 IS:",list2)

res_list=[]

for i in range(0, len(list1)):

    res_list.append(list1[i]+list2[i])

print("The resultant List is :"+str(res_list))

5#Program to input a list and to count number of #non-numeric data in a list

list=[]

s = int(input("Enter no of elements - "))  

for i in range(s):

    list+=[eval(input("Enter the element - "))]  

print(list)

ctr=0

for i in range(s):

    if type(list[i])==str:

           ctr+=1

print("no. of non-numeric data - ",ctr)

6#Find Max number in a given list

list=[1,20,30,87,34]

max = list[0]

for a in list:

    if a > max:    

        max = a

    print(max)