Prabhat

Solutions/largesum.py

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+
+# Function for finding sum of larger numbers 
+def findSum(str1, str2): 
+
+
+	# make sure length  of str2 is larger. 
+	if len(str1)> len(str2): 
+		temp = str1 
+		str1 = str2 
+		str2 = temp 
+
+	# Take an empty string for storing result 
+	str3 = "" 
+
+	# Calculate length of both string 
+	n1 = len(str1) 
+	n2 = len(str2) 
+	diff = n2 - n1 
+
+	# Initially take carry zero 
+	carry = 0
+
+	# Traverse from end of both strings 
+	for i in range(n1-1,-1,-1): 
+
+		# Simple Mathematics to calculate sum+carry
+
+		sum = ((ord(str1[i])-ord('0')) +
+				int((ord(str2[i+diff])-ord('0'))) + carry) 
+
+		str3 = str3+str(sum%10 ) 
+
+
+		carry = sum//10
+
+	# Add remaining digits of str2[] 
+	for i in range(n2-n1-1,-1,-1): 
+
+		sum = ((ord(str2[i])-ord('0'))+carry) 
+		str3 = str3+str(sum%10 ) 
+		carry = sum//10
+
+	# Add remaining carry 
+	if (carry): 
+		str3+str(carry+'0') 
+
+	#remove first two string and append result
+	str3 = str3[::-1] 
+	l.remove(str1)
+	l.remove(str2)
+	l.append(str3)
+
+	return l
+
+# Driver code 
+if __name__ == "__main__": 
+    l=[]
+    n=int(input("enter no of inputs"))
+    for i in range(n):
+        k=input("enter no")
+        l.append(k)
+    for j in range(n-1):
+        findSum(l[0],l[1])
+    print("summing the no we get ",l[0])
+    print("first 10 digits are",l[0][0:10] )#splicing upto 10 digits
+
+
+
+