2d array ds

Author: Fathma

2dArray-DS.js

@@ -0,0 +1,26 @@
+let arr_2D = [[1, 1, 1, 0, 0, 0], [0, 1, 0, 0, 0, 0], [1, 1, 1, 0, 0, 0], [0, 0, 2, 4, 4, 0], [0, 0, 0, 2, 0, 0], [0, 0, 1, 2, 4, 0]]
+
+function hourglassSum(arr) {
+    let sum_arr = []
+    for (let i = 0; i < arr.length - 2; i++) {
+        for (let j = 0; j < arr[i].length - 2; j++) {
+            let sum = 0
+            sum += arr[i][j] + arr[i][j + 1] + arr[i][j + 2]
+            sum += arr[i + 1][j + 1]
+            sum += arr[i + 2][j] + arr[i + 2][j + 1] + arr[i + 2][j + 2]
+            sum_arr.push(sum)
+        }
+    }
+    return largest_Number_arr(sum_arr)
+}
+
+const largest_Number_arr = (arr) => {
+    let largest = arr[0]
+    for (let i = 1; i < arr.length; i++) if (arr[i] > largest) largest = arr[i]
+    return largest
+}
+
+console.log(hourglassSum(arr_2D))
+
+
+