Add reshape-the-matrix

Author: Gituser143

Easy/README.md

@@ -37,6 +37,7 @@ Easy
 - [remove-duplicates-from-sorted-array.md](Easy/remove-duplicates-from-sorted-array.md)
 - [remove-duplicates-from-sorted-list.md](Easy/remove-duplicates-from-sorted-list.md)
 - [remove-element.md](Easy/remove-element.md)
+- [reshape-the-matrix.md](Easy/reshape-the-matrix.md)
 - [reverse-integer.md](Easy/reverse-integer.md)
 - [reverse-linked-list.md](Easy/reverse-linked-list.md)
 - [roman-to-int.md](Easy/roman-to-int.md)

Easy/reshape-the-matrix.md

@@ -0,0 +1,36 @@
+Code
+====
+
+```go
+func matrixReshape(mat [][]int, r int, c int) [][]int {
+	m := len(mat)
+	n := len(mat[0])
+
+	if m*n != r*c {
+		return mat
+	}
+
+	singleRow := []int{}
+	for _, row := range mat {
+		singleRow = append(singleRow, row...)
+	}
+
+	newMat := make([][]int, r)
+	for i := range newMat {
+		row := singleRow[:c]
+		singleRow = singleRow[c:]
+		newMat[i] = row
+	}
+
+	return newMat
+}
+```
+
+Solution in mind
+================
+
+-	A solution is legal only if the product of the number of rows and columns is equal to the product of required rows and columns (`m * n == r * c`).
+
+-	A single row (`singleRow`) is first populated to hold all the elements.
+
+-	A new matrix (`newMat`) is created with the required number of rows and each row is populated by removing `c` number of elements from `singleRow` and putting it into the row of the new matrix.

README.md

@@ -7,7 +7,7 @@ Link to profile, [bhargavsnv100](https://leetcode.com/bhargavsnv100/)
 
 | [Easy](Easy/README.md) | [Medium](Medium/README.md) | [Hard](Hard/README.md) |
 |------------------------|----------------------------|------------------------|
-| 49                     | 78                         | 15                     |
+| 50                     | 78                         | 15                     |
 
 Problems finished
 =================
@@ -51,6 +51,7 @@ Easy
 - [remove-duplicates-from-sorted-array.md](Easy/remove-duplicates-from-sorted-array.md)
 - [remove-duplicates-from-sorted-list.md](Easy/remove-duplicates-from-sorted-list.md)
 - [remove-element.md](Easy/remove-element.md)
+- [reshape-the-matrix.md](Easy/reshape-the-matrix.md)
 - [reverse-integer.md](Easy/reverse-integer.md)
 - [reverse-linked-list.md](Easy/reverse-linked-list.md)
 - [roman-to-int.md](Easy/roman-to-int.md)