如何将连续序列0,20,40…转换为1,2,3…序列？

Hey there! Let's get this sequence generator working correctly for you.

First, let's clarify your core requirement: you need to map input values like 0 → 1, 20 → 2, 40 → 3, 60 → 4, and so on. The key mathematical pattern here is (input value / 20) + 1 — this formula works for every case in your sequence, including the 0 input!

Your original code had two small issues holding it back:

• The else branch uses division by 10, which would turn 40 into 4 instead of the desired 3
• You don't need separate logic for the 0 case, since the unified formula handles it perfectly

Here's the corrected, simplified function:

function generateSequence(consecutiveSequence) {
  const output = (consecutiveSequence / 20) + 1;
  console.log(output);
  
  // If you need to guarantee an integer result (in case of unexpected non-multiples of 20), you can use:
  // console.log(Math.floor(output));
}

Let's test it against your target inputs to confirm:

• Input 0 → (0 / 20) + 1 = 1 ✔️
• Input 20 → (20 / 20) + 1 = 2 ✔️
• Input 40 → (40 / 20) + 1 = 3 ✔️
• Input 80 → (80 / 20) + 1 = 5 ✔️

This should generate exactly the sequence you need. If you anticipate inputs that might not be clean multiples of 20, adding Math.floor() (or Math.round() if you want to handle near-values) will ensure you get whole numbers as output.

内容的提问来源于stack exchange，提问作者sarvesh shukla