diff --git a/src/_Problems_/max-consecutive-1s/index.js b/src/_Problems_/max-consecutive-1s/index.js
new file mode 100644
index 00000000..18a5058a
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+++ b/src/_Problems_/max-consecutive-1s/index.js
@@ -0,0 +1,24 @@
+/**
+ * Find the length of maximum consecutive 1s in an array of o & 1
+ * Input: [1, 0, 1, 1, 0] O/P - 2
+ * Input: [0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1] O/P - 5
+ *
+ * Solved in O(n)
+ */
+
+function findMaxConsecutive1s(arr) {
+  let count = 0;
+  let max = 0;
+  const length = arr.length;
+
+  for (let i = 0; i < length; i += 1) {
+    if (arr[i] === 1) {
+      count += 1;
+    } else if (arr[i] === 0) {
+      if (count > max) max = count;
+      count = 0;
+    }
+  }
+  if (count > max) max = count;
+  return max;
+}