增加新题目

动态规划/打家劫舍/main.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+
+}
+func rob(nums []int) int {
+
+	return 0
+}

动态规划/杨辉三角/main.go

@@ -0,0 +1,29 @@
+package main
+
+func main() {
+
+}
+func generate(numRows int) [][]int {
+	reslist := make([][]int, 0)
+	for i := 0; i < numRows; i++ {
+		tmpnumlist := make([]int, 0)
+		if i == 0 {
+			tmpnumlist = append(tmpnumlist, 1)
+			reslist = append(reslist, tmpnumlist)
+			continue
+		}
+		for j := 0; j < i+1; j++ {
+			if j-1 < 0 {
+				tmpnumlist = append(tmpnumlist, reslist[i-1][0])
+				continue
+
+			} else if j == len(reslist[i-1]) {
+				tmpnumlist = append(tmpnumlist, reslist[i-1][j-1])
+				continue
+			}
+			tmpnumlist = append(tmpnumlist, reslist[i-1][j]+reslist[i-1][j-1])
+		}
+		reslist = append(reslist, tmpnumlist)
+	}
+	return reslist
+}

动态规划/爬楼梯/main.go

@@ -0,0 +1,21 @@
+package main
+
+func main() {
+
+}
+
+func climbStairs(n int) int {
+	if n == 1 {
+		return 1
+	}
+	if n == 2 {
+		return 2
+	}
+	stepn1 := 1
+	stepn2 := 2
+	for i := 3; i <= n; i++ {
+		current := stepn1 + stepn2
+		stepn1, stepn2 = stepn2, current
+	}
+	return stepn2
+}