Update README.md

Author: SoftStoneDevelop

README.md

@@ -198,3 +198,40 @@ Insert benchmark
         }
 
 ```
+|             Method | StrLength |          Mean | Ratio |    Allocated | Alloc Ratio |
+|------------------- |---------- |--------------:|------:|-------------:|------------:|
+|      **StringBuilder** |         **5** |      **2.064 μs** |  **1.00** |      **2.31 KB** |        **1.00** |
+| StringBuilderArray |         5 |      3.800 μs |  1.79 |      2.04 KB |        0.88 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |         **7** |      **2.075 μs** |  **1.00** |      **3.38 KB** |        **1.00** |
+| StringBuilderArray |         7 |      3.878 μs |  1.88 |      2.04 KB |        0.60 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |        **10** |      **2.071 μs** |  **1.00** |      **3.38 KB** |        **1.00** |
+| StringBuilderArray |        10 |      3.872 μs |  1.90 |      2.04 KB |        0.60 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |        **50** |      **2.738 μs** |  **1.00** |     **14.24 KB** |        **1.00** |
+| StringBuilderArray |        50 |      3.935 μs |  1.47 |      2.04 KB |        0.14 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |       **100** |      **3.129 μs** |  **1.00** |     **27.02 KB** |        **1.00** |
+| StringBuilderArray |       100 |      3.930 μs |  1.26 |      2.04 KB |        0.08 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |      **1000** |     **10.129 μs** |  **1.00** |    **210.98 KB** |       **1.000** |
+| StringBuilderArray |      1000 |      3.872 μs |  0.41 |      2.04 KB |       0.010 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |      **2500** |     **21.183 μs** |  **1.00** |    **506.12 KB** |       **1.000** |
+| StringBuilderArray |      2500 |      3.920 μs |  0.19 |      2.04 KB |       0.004 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |      **5000** |     **40.544 μs** |  **1.00** |   **1022.95 KB** |       **1.000** |
+| StringBuilderArray |      5000 |      3.840 μs |  0.10 |      2.04 KB |       0.002 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |     **10000** |     **71.205 μs** |  **1.00** |   **2019.62 KB** |       **1.000** |
+| StringBuilderArray |     10000 |      3.931 μs |  0.06 |      2.04 KB |       0.001 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |    **100000** |  **5,484.256 μs** | **1.000** |  **20133.58 KB** |       **1.000** |
+| StringBuilderArray |    100000 |      3.898 μs | 0.001 |      2.04 KB |       0.000 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |    **500000** | **13,426.100 μs** | **1.000** |  **100610.3 KB** |       **1.000** |
+| StringBuilderArray |    500000 |      4.041 μs | 0.000 |      2.04 KB |       0.000 |
+|                    |           |               |       |              |             |
+|      **StringBuilder** |   **1071741** | **15,779.680 μs** | **1.000** | **215621.21 KB** |       **1.000** |
+| StringBuilderArray |   1071741 |      4.087 μs | 0.000 |      2.04 KB |       0.000 |