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Find Length of String Without Using Built-in Function

Given a string s, find its length without using any built-in length property or function.

Difficulty:

JavaScript Solution

function stringLength(s) {
  let count = 0;
  for (let _ of s) count++;
  return count;
}

Explanation: We manually count characters by iterating over the string.

⏱ O(n) | 💾 O(1)

Console

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