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  1. def longAdd(s1,s2):
  2.      p=0
  3.      l1=len(s1)
  4.      l2=len(s2)
  5.      i1=l1-1
  6.      i2=l2-1
  7.      res=""
  8.      while(True):
  9.          if ((i1<0) & (i2<0)):
  10.      	     break
  11.          if (i1<0):
  12.              a2=int(s2[i2])+p
  13.              p=a2//10
  14.              a2=a2%10
  15.              res=str(a2)+res
  16.              i2-=1
  17.              if (i2<0):
  18.              	break
  19.          if (i2<0):
  20.              a1=int(s1[i1])+p
  21.              p=a1//10
  22.              a1=a1%10
  23.              res=str(a1)+res
  24.              i1-=1
  25.              if (i1<0):
  26.              	break
  27.          a1=int(s1[i1])
  28.          a2=int(s2[i2])
  29.          r=a1+a2+p
  30.          p=r//10
  31.          r=r%10
  32.          res=str(r)+res
  33.          i1-=1
  34.          i2-=1
  35.      if (p>0):
  36.          res=str(p)+res
  37.      return res
  38.  
  39. s1="9999"
  40. s2="8888"
  41. r=longAdd(s1,s2)
  42. print(r)
  43.  
Success #stdin #stdout 0.02s 27712KB
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18887
https://ideone.com/sR4cg4
language:
Python 3 (python  3.12)
created:
6 years ago
visibility:
public

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