Create 279-perfect-squares.js

Author: everthis

279-perfect-squares.js

@@ -0,0 +1,18 @@
+/**
+ * @param {number} n
+ * @return {number}
+ */
+const numSquares = function(n) {
+    const dp = new Array(n+1).fill(Number.MAX_VALUE)
+    dp[0] = 0
+    for(let i = 1; i <= n; i++) {
+        let min = Number.MAX_VALUE
+        let j = 1
+        while(i - j*j >= 0) {
+            min = Math.min(min, dp[i-j*j] + 1)
+            ++j
+        }
+        dp[i] = min
+    }
+    return dp[n]
+};