From 785d9561b6bf0f45036adabd3ec83b8ad017d409 Mon Sep 17 00:00:00 2001
From: mac <mac@macs-MacBook-Pro.local>
Date: Wed, 14 Sep 2022 10:53:14 +0100
Subject: [PATCH] first commit

---
 src/binary-reversal/index.js | 24 +++++++++++++++++++++++-
 src/list-sorting/index.js    | 20 ++++++++++++++++++--
 2 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/src/binary-reversal/index.js b/src/binary-reversal/index.js
index 965bccf4..c0e99c1c 100644
--- a/src/binary-reversal/index.js
+++ b/src/binary-reversal/index.js
@@ -3,6 +3,28 @@
  *
  *  * @param {string} value
  */
-function binaryReversal(value) {}
+ function binaryReversal(value) {
+    if(!value) return "0";
+    // let value = '225';
+    let num = parseInt(value);
+    let binaryNumber = num.toString(2);
+
+    
+    let paddedBinary;
+    if(binaryNumber.length > 8) {
+        paddedBinary = "0".repeat(8 - (binaryNumber.length % 8)) + binaryNumber;
+    }else {
+        paddedBinary = "0".repeat(8 - binaryNumber.length) + binaryNumber;
+    }
+    console.log(paddedBinary);
+    let reversedBinary = paddedBinary.split("").reverse().join("");
+
+    
+    return parseInt(reversedBinary,2).toString();
+    
+}
+// console.log(binaryReversal("1"));
+
+
 
 module.exports = binaryReversal;
diff --git a/src/list-sorting/index.js b/src/list-sorting/index.js
index 6636c20d..40b7ff92 100644
--- a/src/list-sorting/index.js
+++ b/src/list-sorting/index.js
@@ -1,3 +1,19 @@
-function listSorting(needle, haystack) {}
-
+// function listSorting(needle, haystack) {}
+function listSorting(needle, haystack) {
+    let rowIndex = haystack.length - 1;
+    let colIndex = -1;
+  
+    for (let i = haystack.length - 1; i >= 0; i--) {
+      if (Array.isArray(haystack[i])) {
+        rowIndex = i;
+        colIndex = haystack[i].lastIndexOf(needle);
+        if (colIndex != -1) {
+          return [rowIndex, colIndex];
+        }
+      } else {
+        if (haystack[i] == needle) return i;
+      }
+    }
+    return -1;
+  }
 module.exports = listSorting;