Array integer adjacent diff

array-integer-adjacent-diff · version 1.0.0 · Numbers & math · free, no key needed

Replace an array of canonical integer strings with consecutive first differences.

Use when you need to: array integer adjacent diff · consecutive integer differences · first differences of integer array.

Supported

• array integer adjacent diff
• consecutive integer differences
• first differences of integer array

Not supported

• second differences
• percentage change
• floating point differences
• derivative of a function
• CSV column differences

Behavior

• Input values is an array of at most 10000 canonical integer strings.
• A canonical integer is 0 or an optional ASCII minus followed by a non-zero leading digit and only digits after that.
• Input -0 is accepted and canonicalized to 0; +, spaces, underscores, hex, exponents, empty strings, and other leading zeros are rejected.
• Integers are parsed with BigInt. IEEE-754 numbers are rejected.
• Output values has length n-1; item i is values[i+1] minus values[i] as a canonical integer string.
• Arrays of length 0 or 1 yield an empty array.
• Each input and every difference may have at most 1000 digits excluding the sign.

Input

• values (array of string, required): max items 10000; each min length 1; each max length 1001

Output

• values (array of string, required): max items 9999; each max length 1001; each pattern ^(0|-?[1-9][0-9]*)$

Limits

• max items: 10000
• max digits: 1000

Example

Request input:

{
  "values": [
    "4",
    "-1",
    "7",
    "0"
  ]
}

Response:

{
  "result": {
    "values": [
      "-5",
      "8",
      "-7"
    ]
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "array-integer-adjacent-diff",
  "version": "1.0.0",
  "input": {
    "values": [
      "4",
      "-1",
      "7",
      "0"
    ]
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/array-integer-adjacent-diff/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"values":["4","-1","7","0"]}'

The machine-readable contract is at /v1/tools/array-integer-adjacent-diff/versions/1.0.0.

CLI

node cli.mjs run array-integer-adjacent-diff 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• Array integer cumulative sum: Replace an array of canonical integer strings with equal-length prefix sums.
• Array integer GCD: Compute the non-negative greatest common divisor of an array of canonical integer strings.
• Array integer LCM: Compute the non-negative least common multiple of an array of canonical integer strings.
• Array integer median: Select lower and upper middle canonical integers; emit median only for odd length.
• Array integer min max: Return the numeric minimum and maximum of canonical integer strings.
• Array integer mode: Return the most frequent canonical integers, listing every mode in first-seen order.