规范格式

leetcode/0084.Largest-Rectangle-in-Histogram/84. Largest Rectangle in Histogram.go

@@ -0,0 +1,39 @@
+package leetcode
+
+import "fmt"
+
+func largestRectangleArea(heights []int) int {
+	maxArea, stack, height := 0, []int{}, 0
+	for i := 0; i <= len(heights); i++ {
+		if i == len(heights) {
+			height = 0
+		} else {
+			height = heights[i]
+		}
+		if len(stack) == 0 || height >= heights[stack[len(stack)-1]] {
+			stack = append(stack, i)
+		} else {
+			tmp := stack[len(stack)-1]
+			fmt.Printf("1. tmp = %v stack = %v\n", tmp, stack)
+			stack = stack[:len(stack)-1]
+			length := 0
+			if len(stack) == 0 {
+				length = i
+			} else {
+				length = i - 1 - stack[len(stack)-1]
+				fmt.Printf("2. length = %v stack = %v i = %v\n", length, stack, i)
+			}
+			maxArea = max(maxArea, heights[tmp]*length)
+			fmt.Printf("3. maxArea = %v heights[tmp]*length = %v\n", maxArea, heights[tmp]*length)
+			i--
+		}
+	}
+	return maxArea
+}
+
+func max(a int, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}