locutus/julia/Base/searchsortedfirst.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.searchsortedfirst = searchsortedfirst;
function searchsortedfirst(values, target) {
    //      discuss at: https://locutus.io/julia/searchsortedfirst/
    // parity verified: Julia 1.11
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Returns 1-based insertion index in a sorted array, like Julia searchsortedfirst.
    //       example 1: searchsortedfirst([1, 3, 5, 7], 4)
    //       returns 1: 3
    //       example 2: searchsortedfirst([1, 3, 5, 7], 0)
    //       returns 2: 1
    //       example 3: searchsortedfirst([1, 3, 5, 7], 9)
    //       returns 3: 5
    if (!Array.isArray(values)) {
        return 1;
    }
    let low = 0;
    let high = values.length;
    const needle = Number(target);
    while (low < high) {
        const mid = Math.floor((low + high) / 2);
        const value = Number(values[mid]);
        if (value < needle) {
            low = mid + 1;
        }
        else {
            high = mid;
        }
    }
    return low + 1;
}