Added ruby array manipulation category and some snippets

Author: ACR1209

snippets/ruby/array-manipulation/binary-search.md

@@ -0,0 +1,34 @@
+---
+title: Binary Search
+description: Searches for an element in a sorted array using binary search.
+author: ACR1209
+tags: ruby,array,binary-search,search
+---
+
+```rb
+def binary_search(array, target)
+  low = 0
+  high = array.length - 1
+
+  while low <= high
+    mid = (low + high) / 2
+    guess = array[mid]
+
+    if guess == target
+      return mid
+    elsif guess > target
+      high = mid - 1
+    else
+      low = mid + 1
+    end
+  end
+
+  return nil
+end
+
+# Usage
+array = [1, 3, 5, 7, 9]
+target = 5
+result = binary_search(array, target)
+puts result # Output: 2
+```

snippets/ruby/array-manipulation/chunk-array.md

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+---
+title: Chunk Array
+description: Splits an array into chunks of a specified size.
+author: ACR1209
+tags: ruby,array,chunk,utility
+---
+
+```rb
+def chunk_array(array, size)
+    array.each_slice(size).to_a
+end
+
+# Example usage:
+arr = [1, 2, 3, 4, 5, 6, 7, 8, 9]
+chunked_arr = chunk_array(arr, 2)
+puts chunked_arr.inspect # Output: [[1, 2], [3, 4], [5, 6], [7, 8], [9]]
+```

snippets/ruby/array-manipulation/matrix-transpose.md

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+---
+title: Matrix Transpose
+description: Transposes a 2D matrix.
+author: ACR1209
+tags: ruby,array,matrix,transpose
+---
+
+```ruby
+def transpose_matrix(matrix)
+    return [] if matrix.empty?
+    return [] if matrix.first.empty?
+
+    matrix.first.zip(*matrix[1..-1])
+end
+
+# Usage
+matrix = [
+    [1, 2, 3],
+    [4, 5, 6],
+    [7, 8, 9]
+]
+print transpose_matrix(matrix) # Output: [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
+```