Golang | Leetcode Golang题解之第150题逆波兰表达式求值

题目：

题解：

func evalRPN(tokens []string) int {stack := make([]int, (len(tokens)+1)/2)index := -1for _, token := range tokens {val, err := strconv.Atoi(token)if err == nil {index++stack[index] = val} else {index--switch token {case "+":stack[index] += stack[index+1]case "-":stack[index] -= stack[index+1]case "*":stack[index] *= stack[index+1]default:stack[index] /= stack[index+1]}}}return stack[0]
}