题解 | 合并区间

/*
 * function Interval(a, b){
 *   this.start = a || 0;
 *   this.end = b || 0;
 * }
 */
/**
 * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
 *
 *
 * @param intervals Interval类一维数组
 * @return Interval类一维数组
 */
function merge(intervals) {
    if(intervals.length ===0) return [];
    intervals.sort((a,b) => a.start -b.start);
    let result = [intervals[0]];
    for(let i= 1; i <intervals.length;i++){
        let last = result[result.length -1];
        let current = intervals[i];
        if(current.start<= last.end){
            last.end = Math.max(last.end,current.end);
        }
        else{
            result.push(current);
        }
    }
    return result;
}
module.exports = {
    merge: merge,
};