Benchmark: Max of Mins: Data Blocks

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

//-- must be var to scope globally
var data = [2, 5, 4, 6, 3, 7, 8, 4, 6, 1, 6, 2, 8, 8, 7, 6];
var blockLength = 3;

Tests:

Lodash Map
const numBlocks = data.length - blockLength + 1; const minPerBlock = _.range(0, numBlocks).map((i) => Math.min(...data.slice(i, i + blockLength)) ); const maxOfMins = Math.max(...minPerBlock); console.log(minPerBlock); console.log(maxOfMins);
For Loop to Block Array
const numBlocks = data.length - blockLength + 1; const minPerBlock = []; for (let i = 0; i < numBlocks; ++i) { const block = data.slice(i, i + blockLength); minPerBlock.push(Math.min(...block)); } const maxOfMins = Math.max(...minPerBlock); console.log( minPerBlock ) console.log( maxOfMins )
Maps
const minPerBlock = [...data].map((v, idx, self) => { return self.length > idx+(blockLength-1) ? self.slice(idx, idx + blockLength) : [0]; }).map((group)=> Math.min(...group) ); const maxOfMins = Math.max(...minPerBlock); console.log( minPerBlock ) console.log( maxOfMins )

Rendered benchmark preparation results:

Previous results

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Related benchmarks:

Max of Mins: Data Blocks (version: 0)