update

1 files changed, 38 insertions, 0 deletions

diff --git a/377/main.js b/377/main.js
new file mode 100755
index 0000000..2de906c
--- /dev/null
+++ b/377/main.js
@@ -0,0 +1,38 @@
+#!/home/devi/.bun/bin/bun
+
+var combinationSum4 = function (nums, target, memo = {}) {
+  let sum = 0;
+  if (target in memo) {
+    return sum + memo[target];
+  }
+  if (target === 0) {
+    sum++;
+    return sum;
+  }
+  if (target < 0) {
+    return sum;
+  }
+
+  for (let num of nums) {
+    var remainder = target - num;
+    if (remainder === 0) {
+      sum++;
+      if (remainder in memo) {
+        memo[remainder]++;
+      } else {
+        memo[remainder] = 1;
+      }
+    }
+    if (remainder > 0) {
+      memo[remainder] = combinationSum4(nums, remainder, memo);
+      sum += memo[remainder];
+    }
+  }
+
+  console.log(memo);
+  memo[target] = sum;
+  return sum;
+};
+
+console.log(combinationSum4([1, 2, 3], 4));
+console.log(combinationSum4([4, 2, 1], 32));