添加 0058.区间和.md Go版本

problems/kamacoder/0058.区间和.md

@@ -357,3 +357,45 @@ int main(int argc, char *argv[])
 
 ```
 
+### Go
+
+```go
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	// fmt效率慢导致超时，使用bufio替代fmt读取输入提高效率
+	scanner := bufio.NewScanner(os.Stdin)
+
+	// 读取前缀和数组长度
+	scanner.Scan()
+	n, _ := strconv.Atoi(scanner.Text())
+
+	// 读取数组元素并计算前缀和
+	prefixSum := make([]int, n+1)
+	for i := 1; i <= n; i++ {
+		scanner.Scan()
+		num, _ := strconv.Atoi(scanner.Text())
+		prefixSum[i] = prefixSum[i-1] + num
+	}
+
+	// 读取查询并计算区间和
+	for scanner.Scan() {
+		line := scanner.Text()
+		indices := strings.Split(line, " ")
+		if len(indices) < 2 {
+			continue
+		}
+		a, _ := strconv.Atoi(indices[0])
+		b, _ := strconv.Atoi(indices[1])
+		fmt.Println(prefixSum[b+1] - prefixSum[a])
+	}
+}
+```