Runtime: 53 ms (Top 32.76%) | Memory: 41.40 MB (Top 93.1%)

Author: AnasImloul

scripts/algorithms/C/Count Numbers with Unique Digits/Count Numbers with Unique Digits.js

@@ -0,0 +1,23 @@
+// Runtime: 53 ms (Top 32.76%) | Memory: 41.40 MB (Top 93.1%)
+
+/**
+ * @param {number} n
+ * @return {number}
+ */
+var countNumbersWithUniqueDigits = function(n) {
+    if(n==0) return 1;
+    let res=1;
+    let k=0;
+    for(let i=1; i<=n; i++){
+        k=1;
+        for(let j=0; j<i; j++){
+            if(j==0){ 
+             k*=(9-j);}
+            else{
+             k*=(10-j);}
+        }
+        res+=k;
+    }
+    return res;
+
+};