Leetcode Problem 2283. Check if Number Has Equal Digit Count and Digit Value

2283. Check if Number Has Equal Digit Count and Digit Value

Leetcode Solutions

Frequency Array Approach

  1. Initialize a frequency array freq of size 10 to store the count of each digit (0-9).
  2. Iterate over each character c in the string num:
    • Convert c to its integer value digit.
    • Increment freq[digit] by 1.
  3. Iterate over each index i in the string num:
    • Convert num[i] to its integer value expectedCount.
    • If freq[i] does not equal expectedCount, return false.
  4. If all indices match their expected counts, return true.
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HashMap Approach

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