150020086

task1.py

+def function1(string1,string2,listVariable):
+	tup1=tuple(string1);						#making tuple of characters in string 1
+	tup2=tuple(string2);						#making tuple of characters in string 2
+	tup3=list(zip(tup1,tup2));					#zipping the two tuples in a list
+	return listVariable+tup3					#returning the appended list
+string1='CS251';
+string2='python';
+ini_list=[1,2,3,4,5];
+print (ini_list);								#print initial list
+print (function1(string1,string2,ini_list));	#print updated list
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task2.py

+def function2(listVariable,n):
+	def get_ele(n):							#function returning lambda function in x(a tuple), n is element number
+		return lambda x:x[n]
+	g=get_ele(n);							#returning a function in x to g, g will return nth element of required tuple
+	lis=list(map(g,listVariable));			#map is used to apply function g to each element of listVariable
+	stuple=sorted(listVariable,key=g);		#sorting the tuple listVariable w.r.t value of function g
+	print (lis);
+	return stuple;
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task3.py

+fil=open('matrix.txt','r');							#opening matrix.txt in fil variable 
+a=fil.read();										#taking text in a string
+arr=a.split();										#splitting string in words
+m=int(arr[0]);										#returning number of rows in m and columns in n
+n=int(arr[1]);
+Arr=[[0 for j in range(n)] for i in range(m)];		#applying for loop to create the matrix in Arr
+for i in range(m):									#reading matrix Arr
+	for j in range(n):
+		Arr[i][j]=arr[2+(n*i)+j];
+Trans=[[0 for j in range(m)] for i in range(n)];	#applying for loop to create the matrix in Trans
+for i in range(n):
+	for j in range(m):
+		Trans[i][j]=Arr[j][i];
+fil.close();										#closing input file
+fil2=open('transpose.txt','w');						#loading file to be written
+st=str(n)+" "+str(m)+'\n';							#writing number of rows and columns
+fil2.write(st);
+for i in range(n):
+	for j in range(m):
+		fil2.write(str(Trans[i][j]));					#writing each row of transpose matrix
+		fil2.write(' ');
+	fil2.write('\n');
+fil2.close();										#closing final file 
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transpose.txt

+5 5
+1 6 11 16 21 
+2 7 12 17 22 
+3 8 13 18 23 
+4 9 14 19 24 
+5 10 15 20 25