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  1. Prepare
  2. Algorithms
  3. Strings
  4. Common Child
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Common Child

  • CYS1B_1720109
     + 0 comments

    Python 3:

    #!/bin/python3

import math
import os
import random
import re
import sys

#
# Complete the 'commonChild' function below.
#
# The function is expected to return an INTEGER.
# The function accepts following parameters:
#  1. STRING s1
#  2. STRING s2
#

def commonChild(s1, s2):
    # Write your code here
    dp = [[0] * (len(s2) + 1) for _ in range(len(s1) + 1)]
    
    for i in range(1, len(s1) + 1):
        for j in range(1, len(s2) + 1):
            if s1[i - 1] == s2[j - 1]:
                dp[i][j] = dp[i - 1][j - 1] + 1
            else:
                dp[i][j] = max(dp[i - 1][j], dp[i][j - 1])
    return dp[len(s1)][len(s2)]

if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    s1 = input()

    s2 = input()

    result = commonChild(s1, s2)

    fptr.write(str(result) + '\n')

    fptr.close()