code every day with me

–DAY 21–

Hi, I am going to make #100DaysOfCode Challenge. Everyday I will try solve 1 problem from leetcode or hackerrank. Hope you can go with me until end.
Now let’s solve problem today:

Problem: Climbing the Leaderboard
Detail: here

…


This content originally appeared on DEV Community and was authored by duccanhole

--DAY 21--

Hi, I am going to make #100DaysOfCode Challenge. Everyday I will try solve 1 problem from leetcode or hackerrank. Hope you can go with me until end.
Now let's solve problem today:

  • Problem: Climbing the Leaderboard
  • Detail: here
  • Idea:
    • Remove the duplicate number of ranked
    • Because player array was sorted, we will find the rank from bottom to top by traversing from tail to head of array
  • My solution(javascript): 
function climbingLeaderboard(ranked, player) {
    ranked = [... new Set(ranked)];
    let ans=[],i=ranked.length-1;
    for(let score of player){
        while(i>=0){
            if(score<ranked[i]){
                ans.push(i+2);
                break;
            }
            i--;
        }
        if(i<0) ans.push(1);
    }
    return ans;
}

-->If you have better solution or any question, please comment below. I will appreciate.


This content originally appeared on DEV Community and was authored by duccanhole


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