Given a string ‘S’ (composed of digits) and an integer ‘X”, the task is to count all the sub-strings of ‘S’ that satisfy the following conditions:
- The sub-string must not begin with the digit ‘0’.
- And the numeric number it represents must be greater than ‘X’.
Note: Two ways of selecting a sub-string are different if they begin or end at different indices.
Input: S = "471", X = 47 Output: 2 Only the sub-strings "471" and "71" satisfy the given conditions. Input: S = "2222", X = 97 Output: 3 Valid strings are "222", "222" and "2222".
- Iterate over each digit of the string ‘S’ and choose the digits which are greater than ‘0’.
- Now, take all possible sub-strings starting from the character chosen in the previous step and convert each sub-string to integer.
- Compare the integer from previous step to ‘X’, if the number is greater than ‘X’ then increment the count variable.
- Finally, print the value of the count variable.
Below is the implementation of the above approach:
- Number of substrings with count of each character as k
- Count Substrings with equal number of 0s, 1s and 2s
- Count number of substrings with exactly k distinct characters
- Count the number of vowels occurring in all the substrings of given string
- Given a binary string, count number of substrings that start and end with 1.
- Count the number of words having sum of ASCII values less than and greater than k
- Count numbers with difference between number and its digit sum greater than specific value
- Count Uppercase, Lowercase, special character and numeric values
- Count substrings with same first and last characters
- Count of total anagram substrings
- Count of substrings of a binary string containing K ones
- Count all Prime Length Palindromic Substrings
- Count distinct substrings that contain some characters at most k times
- Count substrings with each character occurring at most k times
- Count of Palindromic substrings in an Index range
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