class Spaces {
    constructor(r, c) {
        this.r = r;
        this.c = c;
        this.len = 1;
        this.direction = "right";
        this.used = false;
    }
}


let findSpaces = (grid, minLength) => {

    let spaceList = [];
    let gLen = 10;

    // Horizantal scan
    for (let i = 0; i < gLen; i++) {
        for (let j = 0; j < gLen; j++) {
            let c = grid[i][j];
            if (c === '-') {
                let s = new Spaces(i, j);
                while (grid[i][++j] === '-') s.len++;

                if (s.len >= minLength) {
                    spaceList.push(s)
                }
            }

        }
    }

    //vertical scan
    for (let i = 0; i < gLen; i++) {
        for (let j = 0; j < gLen; j++) {
            let c = grid[j][i];
            if (c === '-') {
                let s = new Spaces(j, i);
                s.direction = "down";
                while (++j < gLen && grid[j][i] === '-') s.len++;

                if (s.len >= minLength) {
                    spaceList.push(s)
                }
            }

        }
    }
    return spaceList;
}