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  2. Python
  3. Built-Ins
  4. Athlete Sort
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Athlete Sort

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532 Discussions

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  • maxence_qnt
     + 0 comments

    I am learning lambda expression... This is very powerful. I start to understand the logic that we can sort a list depending of one of his attribute, but we have to give the index of this attribute into the lambda expression. Here my code :

    import math
import os
import random
import re
import sys



if __name__ == '__main__':
    first_multiple_input = input().rstrip().split()

    n = int(first_multiple_input[0])

    m = int(first_multiple_input[1])

    arr = []

    for _ in range(n):
        arr.append(list(map(int, input().rstrip().split())))

    k = int(input().strip())
    
    # With lambda, we can sort depending of one attribute. If I add "-" I have descending order. Here we want ascending order.
    key = lambda item: (item[k])
    #print(sorted(arr, key=key))
    arr = sorted(arr, key=key)
    
    for sublist in arr:
        print(' '.join(map(str, sublist)))

  • rohitambasta_ii1
     + 0 comments
    import math
import os
import random
import re
import sys



if __name__ == '__main__':
    nm = input().split()

    n = int(nm[0])

    m = int(nm[1])

    arr = []

    for _ in range(n):
        arr.append(list(map(int, input().rstrip().split())))

    k = int(input())

    arr_with_key =  [(row[k], idx, row) for idx, row in enumerate(arr)]
  
    arr_with_key.sort()

    for _, _, row in arr_with_key:
        print(' '.join(map(str, row)))

  • yashdeora98294
     + 0 comments

    Here is HackerRank Athlete Sort in Python solution - https://programmingoneonone.com/hackerrank-athlete-sort-problem-solution-in-python.html

  • lumgillis
     + 0 comments
    def set_indexer(i, arr_list):
    index_dict = {}

    for arr in arr_list:
        if arr[i] in index_dict.keys():
            index_dict[arr[i]].append(arr)

        else:
            index_dict[arr[i]] = [arr]

    return index_dict


def sort_and_return(indexed_dict):
    sorted_list = sorted(indexed_dict.keys())
    sorted_arr = []
    for key in sorted_list:
        sorted_arr.extend(indexed_dict[key])

    return sorted_arr



if __name__ == '__main__':
    nm = input().split()

    n = int(nm[0])

    m = int(nm[1])

    arr = []

    for _ in range(n):
        arr.append(list(map(int, input().rstrip().split())))

    k = int(input())
    
    f_arr = sort_and_return(set_indexer(k, arr))
    
    for arr in f_arr:
        for _ in arr:
            print(_, end=' ')
        print()

  • ahmed_gh_soliman
     + 0 comments
    sorted_athletes = sorted(arr, key= lambda x: x[k])
    [print(*athlete) for athlete in sorted_athletes]