Product of Array Except Self

Author: iam-edwin

product-of-array-except-self/iam-edwin.java

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+class Solution {
+    public int[] productExceptSelf(int[] nums) {
+        int[] left = new int[nums.length + 1];
+        int[] right = new int[nums.length + 1];
+        left[0] = 1;
+        right[nums.length] = 1;
+
+        for (int i = 0; i < nums.length; i++) {
+            left[i + 1] = left[i] * nums[i];
+            right[nums.length - i - 1] = right[nums.length - i] * nums[nums.length - i - 1];
+        }
+
+        int[] result = new int[nums.length];
+        for (int i = 0; i < nums.length; i++) {
+            result[i] = left[i] * right[i + 1];
+        }
+        return result;
+    }
+}