Merge pull request #2 from renderforest/task-1-sulution

Solution for Box blur algorithm task

box_blur_algorithm.js

@@ -0,0 +1,28 @@
+const IMAGE = [
+    [7, 4, 0, 1],
+    [5, 6, 2, 2],
+    [6, 10, 7, 8],
+    [1, 4, 2, 0]
+]
+
+function solution(image) {
+    const rowPossibleSubs = image[0].length - 2
+    const colPossibleSubs = image.length - 2
+    const result = []
+    for(let i = 0; i < colPossibleSubs; i++) {
+        result[i] = []
+        for(let j = 0; j < rowPossibleSubs; j++ ) {
+            let sum = 0
+            for(let k = i; k < i + 3; k++) {
+                for(let g = j; g < j + 3; g++) {
+                    sum += image[k][g]
+                }
+            }
+            result[i][j] = Math.floor(sum/9)
+        }
+    }
+    return result
+}
+
+console.log(solution(IMAGE))
+