Cookbook add 0118 solution

leetcode/0118.Pascals-Triangle/118. Pascal's Triangle.go

@@ -0,0 +1,17 @@
+package leetcode
+
+func generate(numRows int) [][]int {
+	result := [][]int{}
+	for i := 0; i < numRows; i++ {
+		row := []int{}
+		for j := 0; j < i+1; j++ {
+			if j == 0 || j == i {
+				row = append(row, 1)
+			} else if i > 1 {
+				row = append(row, result[i-1][j-1]+result[i-1][j])
+			}
+		}
+		result = append(result, row)
+	}
+	return result
+}