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Number of Ways to Separate Numbers solution leetcode

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You wrote down many positive integers in a string called num
. However, you realized that you forgot to add commas to seperate the different numbers. You remember that the list of integers was nondecreasing and that no integer had leading zeros.
Return the number of possible lists of integers that you could have written down to get the string num
. Since the answer may be large, return it modulo 10^{9} + 7
.
Example 1: Number of Ways to Separate Numbers solution leetcode
Input: num = "327" Output: 2 Explanation: You could have written down the numbers: 3, 27 327
Example 2:
Input: num = "094" Output: 0 Explanation: No numbers can have leading zeros and all numbers must be positive.
Example 3:
Input: num = "0" Output: 0 Explanation: No numbers can have leading zeros and all numbers must be positive.
Example 4:
Input: num = "9999999999999" Output: 101
Constraints: Number of Ways to Separate Numbers solution leetcode
1 <= num.length <= 3500
num
consists of digits'0'
through'9'
.
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