Create Zero Array Transformation I.java

Author: varunu28

Medium/Zero Array Transformation I.java

@@ -0,0 +1,24 @@
+class Solution {
+    public boolean isZeroArray(int[] nums, int[][] queries) {
+        int n = nums.length;
+        int[] diff = new int[n + 1];
+        for (int[] query : queries) {
+            int left = query[0];
+            int right = query[1];
+            diff[left] += 1;
+            diff[right + 1] -= 1;
+        }
+        int[] operation = new int[n + 1];
+        int currOperation = 0;
+        for (int i = 0; i < n + 1; i++) {
+            currOperation += diff[i];
+            operation[i] = currOperation;
+        }
+        for (int i = 0; i < n; i++) {
+            if (operation[i] < nums[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+}