Create 3043. Find the Length of the Longest Common Prefix

3043. Find the Length of the Longest Common Prefix

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+class Solution {
+public:
+    int longestCommonPrefix(vector<int>& arr1, vector<int>& arr2) {
+        set<int> st;
+        for (auto num : arr1) {
+            while (num > 0) {
+                st.insert(num);
+                num /= 10;
+            }
+        }
+        int maxi = 0;
+        for (auto num : arr2) {
+            int temp = num;
+            while (temp > 0) {
+
+                if (st.find(temp) != st.end()) {
+                    int len = (int)log10(temp) + 1;
+                    maxi = max(maxi, len);
+                    break;
+                }
+                temp /= 10;
+            }
+        }
+        return maxi;
+    }
+};