diff --git "a/leetcode3/\355\231\251\354\235\200\354\247\200/3992. Rearrange String to Avoid Character Pair.js" "b/leetcode3/\355\231\251\354\235\200\354\247\200/3992. Rearrange String to Avoid Character Pair.js"
new file mode 100644
index 00000000..78505fba
--- /dev/null
+++ "b/leetcode3/\355\231\251\354\235\200\354\247\200/3992. Rearrange String to Avoid Character Pair.js"	
@@ -0,0 +1,24 @@
+/**
+ * @param {string} s
+ * @param {character} x
+ * @param {character} y
+ * @return {string}
+ */
+var rearrangeString = function(s, x, y) {
+   let left=0;
+   let right=s.length-1;
+   const arr=s.split("");
+
+   while(left<right){
+    while(left<arr.length && arr[left]!==x ){left++};
+    while(right>=0 && arr[right]!==y){right--};
+    if(left>=right) break;
+    // swap
+    const temp=arr[left];
+    arr[left++]=arr[right];
+    arr[right--]=temp;
+    console.log(arr);
+   }
+
+   return arr.join("");
+};
\ No newline at end of file
diff --git "a/leetcode3/\355\231\251\354\235\200\354\247\200/948. Bag of Tokens.js" "b/leetcode3/\355\231\251\354\235\200\354\247\200/948. Bag of Tokens.js"
new file mode 100644
index 00000000..f810da34
--- /dev/null
+++ "b/leetcode3/\355\231\251\354\235\200\354\247\200/948. Bag of Tokens.js"	
@@ -0,0 +1,22 @@
+/**
+ * @param {number[]} tokens
+ * @param {number} power
+ * @return {number}
+ */
+var bagOfTokensScore = function (tokens, power) {
+  const dp = Array(10000);
+  dp[power] = 0;
+  const queue = [[power, 0]];
+  let head = 0;
+  let maxScore = 0;
+
+  while (queue.length - head > 0) {
+    const [curP, curS] = queue[head++];
+    maxScore = Math.max(maxScore, curS);
+
+    for (const token of tokens) {
+      if (curP >= token) queue.push([curP - token, curS + 1]);
+      if (curS >= 1) queue.push([curP + token, curS - 1]);
+    }
+  }
+};