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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 11: 2D Arrays
  5. Discussions

Day 11: 2D Arrays

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1940 Discussions

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  • yashdeora98294
     + 0 comments

    Here is Day 11: 2D Arrays problem solution - https://programmingoneonone.com/hackerrank-day-11-2d-arrays-30-days-of-code-solution.html

  • garethguo1996
     + 0 comments

    Python3 Solution

    import math import os import random import re import sys

    if name == 'main':

    arr = []

for _ in range(6):
    arr.append(list(map(int, input().rstrip().split())))
# print(arr)

max_hg =  curr_hg = float('-inf')

for i in range(4):
    for j in range(4):
        first_row = arr[i][j] + arr[i][j+1] + arr[i][j+2]
        second_row = arr[i+1][j+1]
        third_row = arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2]
        curr_hg = first_row + second_row + third_row

        if curr_hg > max_hg:
            max_hg = curr_hg

print(max_hg)

  • akulbachandra67
     + 1 comment
    def total(i,j,m):
a = m[i-1][j-1] + m[i-1][j] + m[i-1][j+1] 
b = m[i][j]
c = m[i+1][j-1] + m[i+1][j] + m[i+1][j+1] 
return a + b + c 


if __name__ == '__main__':
l = []
for _ in range(6):
row = list(map(int,input().split()))
l.append(row)
s = [] 
for i in range(1,5):
for j in range(1,5):
s.append(total(i,j,l)) 

print(max(s))

  • shobithap088
     + 0 comments

    import java.util.Scanner;

    public class HourglassSum { public static void main(String[] args) { Scanner sc = new Scanner(System.in);

        int[][] arr = new int[6][6];

    // Input 6x6 array
    for (int i = 0; i < 6; i++) {
        for (int j = 0; j < 6; j++) {
            arr[i][j] = sc.nextInt();
        }
    }

    int maxSum = Integer.MIN_VALUE;

    // Traverse possible hourglass centers (i from 1 to 4, j from 1 to 4)
    for (int i = 1; i < 5; i++) {
        for (int j = 1; j < 5; j++) {
            int sum = 
                arr[i - 1][j - 1] + arr[i - 1][j] + arr[i - 1][j + 1] + // top
                arr[i][j] +                                             // center
                arr[i + 1][j - 1] + arr[i + 1][j] + arr[i + 1][j + 1];  // bottom

            if (sum > maxSum) {
                maxSum = sum;
            }
        }
    }

    System.out.println(maxSum);
    sc.close();
}

    }

  • yovher
     + 0 comments

    python 3

    !/bin/python3

    import math import os import random import re import sys

    if name == 'main':

    arr = []

for _ in range(6):
    arr.append(list(map(int, input().rstrip().split())))
results=[]
for i in range(0,4):
    for j in range(0,4):
        r=(arr[i][j]+arr[i][j+1]+arr[i][j+2]+arr[i+1][j+1]+arr[i+2][j]+arr[i+2][j+1]+arr[i+2][j+2])     
        results.append(r)       
print(max(results))