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STEP1_Basics/4_Double_array/main.kt

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+fun main() {
+    val matrix: Array<Array<Int>> = Array(10) { Array<Int>(10) { 0 } }
+    //matrix[0][0] = 1
+    // Fill from left-top to right-top
+    for (i in 0..9) {
+        matrix[i][0] = i
+    }
+    // Fill from left-top to left-bottom
+    for (i in 0..9) {
+        matrix[0][i] = i
+    }
+
+    // Fill all other
+    for (x in 1..9) {
+        for (y in 1..9) {
+            matrix[x][y] = x * y
+        }
+    }
+
+    // Get output
+    for (x in 0..9) {
+        for (y in 0..9) {
+            if (matrix[x][y] >= 10) {
+                print("${matrix[x][y]} ")
+            }
+            else {
+                print("${matrix[x][y]}  ")
+            }
+        }
+        println()
+    }
+}