Update 787-cheapest-flights-within-k-stops.js

Author: everthis

787-cheapest-flights-within-k-stops.js

@@ -7,23 +7,22 @@
  * @return {number}
  */
 var findCheapestPrice = function(n, flights, src, dst, k) {
-    let cost = new Array(n).fill(Number.MAX_SAFE_INTEGER);
-    cost[src] = 0;
-    
-    for (let i = 0; i <= k; i++) {
-        let temp = [...cost];
-        for (let [curr, next, price] of flights) {
-            if (cost[curr] === Number.MAX_SAFE_INTEGER) {
-                continue;
-            }
-            temp[next] = Math.min(temp[next], cost[curr] + price);
-        }
-        cost = temp;
-    }
-    
-    return cost[dst] === Number.MAX_SAFE_INTEGER ? -1 : cost[dst];
+  let cost = Array(n).fill(Infinity)
+  cost[src] = 0
+  
+  for(let i = 0; i <= k; i++) {
+      const tmp = [...cost]
+      for(const [f, t, p] of flights) {
+          if(cost[f] === Infinity) continue
+          tmp[t] = Math.min(tmp[t], cost[f] + p)
+      }
+      cost = tmp
+  }
+  
+  return cost[dst] === Infinity ? -1 : cost[dst]
 };
 
+
 // another
 
 /**