honoi.js

class honoiClass {
  isValidMove(sIdx, eIdx, startSelect, endSelect) {
        if(startSelect > this.state.numDisks - 1 || endSelect < 0) return false;

        if (this.state.stacks[sIdx][startSelect] === 0) {
            return this.isValidMove(sIdx, eIdx, startSelect + 1, endSelect);
        } else if (this.state.stacks[eIdx][endSelect] !== 0) {
            if (this.state.stacks[sIdx][startSelect] < this.state.stacks[eIdx][endSelect]) {
                return this.isValidMove(sIdx, eIdx, startSelect, endSelect-1);
            } else {
                return false;
            }
        } else return {start: startSelect, end: endSelect};
    }
}