Leetcode Problem 1416. Restore The Array

1416. Restore The Array

Leetcode Solutions

Dynamic Programming (Bottom Up)

  1. Initialize an array dp of size m + 1 with all elements set to 0, where m is the length of the string s. Set dp[0] to 1.
  2. Iterate over each starting index start from 0 to m - 1. a. If s[start] is '0', skip to the next iteration since we cannot have leading zeros. b. Otherwise, initialize a variable num to 0 to store the current number. c. Iterate over each ending index end from start to m - 1. i. Update num by appending the digit s[end]. ii. If num is greater than k, break the loop as we cannot have numbers larger than k. iii. Add dp[start] to dp[end + 1].
  3. Return dp[m] modulo 10^9 + 7.
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Dynamic Programming (Top Down)

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