Create 2614-prime-in-diagonal.js

Author: everthis

2614-prime-in-diagonal.js

@@ -0,0 +1,30 @@
+const isPrime = num => {
+    for(let i = 2, s = Math.sqrt(num); i <= s; i++) {
+        if(num % i === 0) return false;
+    }
+    return num > 1;
+}
+/**
+ * @param {number[][]} nums
+ * @return {number}
+ */
+var diagonalPrime = function(nums) {
+  const n = nums.length
+  let res = 0
+  for(let i = 0; i < n; i++) {
+    if(isPrime(nums[i][i])) {
+      res = Math.max(res, nums[i][i])
+    }
+  }
+  
+  for(let i = 0; i < n; i++) {
+    if(isPrime(nums[i][n - 1 - i])) {
+      res = Math.max(res, nums[i][n - 1 - i])
+    }
+  }
+  
+  
+  return res
+    
+
+};