Merge pull request #2762 from suinming/kamacoder-94-SPFA-js

feat:  94. 城市间货物运输 I SPEA新增js算法

Author: youngyangyang04

problems/kamacoder/0094.城市间货物运输I-SPFA.md

@@ -464,6 +464,60 @@ if __name__ == "__main__":
 
 ### Javascript
 
+```js
+async function main() {
+    // 輸入
+    const rl = require('readline').createInterface({ input: process.stdin })
+    const iter = rl[Symbol.asyncIterator]()
+    const readline = async () => (await iter.next()).value
+    const [n, m] = (await readline()).split(" ").map(Number)
+    const grid = {}
+    for (let i = 0 ; i < m ; i++) {
+        const [src, desc, w] = (await readline()).split(" ").map(Number)
+        if (grid.hasOwnProperty(src)) {
+            grid[src].push([desc, w])
+        } else {
+            grid[src] = [[desc, w]]
+        }
+    }
+    const minDist = Array.from({length: n + 1}, () => Number.MAX_VALUE)
+    
+    // 起始點
+    minDist[1] = 0
+    
+    const q = [1]
+    const visited = Array.from({length: n + 1}, () => false)
+    
+    while (q.length) {
+        const src = q.shift()
+        const neighbors = grid[src]
+        visited[src] = false
+        if (neighbors) {
+            for (const [desc, w] of neighbors) {
+                if (minDist[src] !== Number.MAX_VALUE 
+                && minDist[src] + w < minDist[desc]) {
+                    minDist[desc] = minDist[src] + w
+                    if (!visited[desc]) {
+                        q.push(desc)
+                        visited[desc] = true
+                    }
+                    
+                }            
+            }            
+        }
+    }
+    
+    // 輸出
+    if (minDist[n] === Number.MAX_VALUE) {
+        console.log('unconnected')
+    } else {
+        console.log(minDist[n])
+    }
+}
+
+main()
+```
+
 ### TypeScript
 
 ### PhP