Create Matrix Calculator

Python/Matrix Calculator

@@ -0,0 +1,138 @@
+def accept_matrix(M) :
+    print("\nEnter the order of the Matrix (row,col) : ")
+    r = int(input("\trow = "))
+    c = int(input("\tcol = "))
+    print("Enter the elements of the Matrix : \n")
+    for i in range(r) :
+       A = []
+       for j in range (c) :
+          A.append(int(input()))
+       M.append(A)
+    print("\nMatrix accepted successfully\n")
+
+
+def display_matrix(M,r,c): 
+   print("Matrix (%d,%d) : "%(r,c))
+   for i in range(r) :
+      print("\t\t",end=' ')
+      for j in range(c):
+          print("%3d"%M[i][j],end=' ')
+      print("")	
+
+
+def addition_matrix(M1,M2,M3,r,c) :
+    for i in range(r) :
+        A = []        
+        for j in range(c): 
+           A.append(M1[i][j] + M2[i][j])
+        M3.append(A)
+
+def substraction_matrix(M1,M2,M3,r,c) :
+    for i in range(r) :
+        A = []        
+        for j in range(c): 
+           A.append(M1[i][j] - M2[i][j])
+        M3.append(A)
+
+
+def multiplication_matrix(M1,M2,M3,r1,c1,c2) :
+      for i in range(r1) :
+        A = []
+        for j in range(c2) : 
+            sum = 0
+            for k in range(c1) :
+                sum = sum + (M1[i][k] * M2[k][j])
+            A.append(sum)
+        M3.append(A)
+
+def find_transpose_matrix(M,r,c,T) :
+    for i in range(c):
+        A = []
+        for j in range(r):
+           A.append(M[j][i])
+        T.append(A)
+
+def main():   
+   while True :
+       print("\t\t\t1: Accept Matrix");
+       print("\t\t\t2: Display Matrix");
+       print("\t\t\t3: Addition of Matrices");
+       print("\t\t\t4: Substraction of Matrices");
+       print("\t\t\t5: Multiplication of Matrices");
+       print("\t\t\t6: Transpose Matrix");
+       print("\t\t\t7: Exit");
+
+       ch = int(input("Enter your choice : "))
+       M3 = []       
+       if (ch == 7):
+           print ("End of Program")
+           break
+       elif (ch==1):
+           M1 = []
+           M2 = []
+           print("Input First Matrix ")
+           accept_matrix(M1)
+           r1 = len(M1)
+           c1 = len(M1[0])
+           print("Input Second Matrix ")
+           accept_matrix(M2)
+           r2 = len(M2)
+           c2 = len(M2[0]) 
+       elif (ch==2):
+           print("\tFirst ",end=' ')
+           display_matrix(M1,r1,c1)
+           print("\tSecond ",end =' ')
+           display_matrix(M2,r2,c2)	
+       elif (ch==3):
+           print("\tFirst ",end=' ')
+           display_matrix(M1,r1,c1)
+           print("\tSecond ",end =' ')
+           display_matrix(M2,r2,c2)
+           if(r1 == r2 and c1 == c2) :
+               addition_matrix(M1,M2,M3,r1,c1)
+               print("\tAddition  ")
+               display_matrix(M3,r1,c1)
+           else :
+               print("Addition not possible (order not same)")
+
+       elif (ch==4):
+           print("\tFirst ",end=' ')
+           display_matrix(M1,r1,c1)
+           print("\tSecond ",end =' ')
+           display_matrix(M2,r2,c2)
+           if(r1 == r2 and c1 == c2) :
+               substraction_matrix(M1,M2,M3,r1,c1)
+               print("\tSubstraction  ")
+               display_matrix(M3,r1,c1)
+           else :
+               print("substraction not possible (order not same)")
+
+       elif (ch==5):
+           print("\tFirst ",end=' ')
+           display_matrix(M1,r1,c1)
+           print("\tSecond ",end =' ')
+           display_matrix(M2,r2,c2)
+           if(c1 == r2) :
+               multiplication_matrix(M1,M2,M3,r1,c1,c2)
+               print("\tMultiplication  ")
+               display_matrix(M3,r1,c2)
+           else :
+               print("Multiplication not possible ")
+       elif (ch==6):
+           print("\tFirst ",end=' ')
+           display_matrix(M1,r1,c1)
+           find_transpose_matrix(M1,r1,c1,M3);
+           print("\tTranspose  ",end=' ');
+           display_matrix(M3,c1,r1)
+           print("\tSecond ",end =' ')
+           display_matrix(M2,r2,c2)
+           M3 = []
+           find_transpose_matrix(M2,r2,c2,M3);
+           print("\tTranspose  ",end=' ');
+           display_matrix(M3,c2,r2)
+
+       else :
+           print ("Wrong choice entered !! Try again")
+
+main()
+quit()