Normalize the ratio of a number in a range

Map a value in [min, max] to [0, 1].

JavaScript Version 1.0.0 · MIT · .md

function normalizeRatio({ value, min, max }) { return (value - min) / (max - min); }

Input & expected output

{
  "value": 75,
  "min": 50,
  "max": 150
}

0.25

The edge case

{
  "value": 200,
  "min": 50,
  "max": 150
}

1.5

Know the limits

• Values outside the range give ratios outside 0–1. The lab requires min < max.

The function above is the implementation used by the lab. The lab validates JSON types and caps size before execution; include equivalent validation when accepting untrusted input in your application.

Keep exploring

• Convert degrees to radians — Multiply by π and divide by 180.
• Check if a rectangle contains another one — Compare corners: a contains b when b’s corners sit inside or on a’s edges.
• Check if a rectangle overlaps another one — Two rectangles overlap when they overlap on both axes.