Decode Ways Dynamic Programming | Total Ways to Decode a String | Count Encodings
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NADOS also enables doubt support, career opportunities and contests besides free of charge content for learning. In this video, we discuss the Count Encodings problem where we are required to count and print all the encodings for a string as per the codes given in the question.
In this problem,
1. You are given a string str of digits. (will never start with a 0)
2. You are required to encode the str as per following rules
1 - a
2 - b
3 - c
..
25 - y
26 - z
3. You are required to calculate and print the count of encodings for the string str.
For 123 - there are 3 encodings. abc, aw, lc
For 993 - there is 1 encoding. iic
For 013 - This is an invalid input. A string starting with 0 will not be passed.
For 103 - there is 1 encoding. jc
For 303 - there are 0 encodings. But such a string maybe passed. In this case
print 0.
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