From 9ca9e4f4cba69acd829598e109ca15cece34b783 Mon Sep 17 00:00:00 2001 From: X-shuffle <53906918+X-shuffle@users.noreply.github.com> Date: Wed, 11 Aug 2021 12:15:35 +0800 Subject: [PATCH 1/3] =?UTF-8?q?=E6=9B=B4=E6=96=B0=200056.=E5=90=88?= =?UTF-8?q?=E5=B9=B6=E5=8C=BA=E9=97=B4=20go=E7=89=88=E6=9C=AC=EF=BC=88?= =?UTF-8?q?=E4=BC=98=E5=8C=96=E7=A9=BA=E9=97=B4=E5=A4=8D=E6=9D=82=E5=BA=A6?= =?UTF-8?q?=EF=BC=8C=E4=B8=8D=E5=BC=80=E8=BE=9F=E6=96=B0=E6=95=B0=E7=BB=84?= =?UTF-8?q?=EF=BC=89?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 更新 0056.合并区间 go版本（优化空间复杂度，不开辟新数组） --- problems/0056.合并区间.md | 41 ++++++++++++++++------------------- 1 file changed, 19 insertions(+), 22 deletions(-) diff --git a/problems/0056.合并区间.md b/problems/0056.合并区间.md index 99c870c6..441cc63c 100644 --- a/problems/0056.合并区间.md +++ b/problems/0056.合并区间.md @@ -176,30 +176,27 @@ class Solution: ``` Go： -```Go +```golang func merge(intervals [][]int) [][]int { - sort.Slice(intervals, func(i, j int) bool { - return intervals[i][0]=intervals[i+1][0]{ + intervals[i][1]=max(intervals[i][1],intervals[i+1][1])//赋值最大值 + intervals=append(intervals[:i+1],intervals[i+2:]...) + i-- + } + } + return intervals } -func max(a, b int) int { - if a > b { return a } - return b +func max(a,b int)int{ + if a>b{ + return a + } + return b } ``` From 08b07abd74c50b041846d6453ea7c9a383388fae Mon Sep 17 00:00:00 2001 From: X-shuffle <53906918+X-shuffle@users.noreply.github.com> Date: Wed, 11 Aug 2021 16:21:21 +0800 Subject: [PATCH 2/3] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200738.=E5=8D=95?= =?UTF-8?q?=E8=B0=83=E9=80=92=E5=A2=9E=E7=9A=84=E6=95=B0=E5=AD=97=20go?= =?UTF-8?q?=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 添加 0738.单调递增的数字 go版本 --- problems/0738.单调递增的数字.md | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/problems/0738.单调递增的数字.md b/problems/0738.单调递增的数字.md index 7cb24236..82f7f3ae 100644 --- a/problems/0738.单调递增的数字.md +++ b/problems/0738.单调递增的数字.md @@ -159,7 +159,26 @@ class Solution: ``` Go： - +```golang +func monotoneIncreasingDigits(N int) int { + s := strconv.Itoa(N)//将数字转为字符串，方便使用下标 + ss := []byte(s)//将字符串转为byte数组，方便更改。 + n := len(ss) + if n <= 1 { + return N + } + for i:=n-1 ; i>0; i-- { + if ss[i-1] > ss[i] {//前一个大于后一位,前一位减1，后面的全部置为9 + ss[i-1] -= 1 + for j := i ; j < n; j++ {//后面的全部置为9 + ss[j] = '9' + } + } + } + res, _ := strconv.Atoi(string(ss)) + return res +} +``` Javascript: ```Javascript var monotoneIncreasingDigits = function(n) { From fa6e237f628aec738b0a186f5c7dc355a2d29c4c Mon Sep 17 00:00:00 2001 From: X-shuffle <53906918+X-shuffle@users.noreply.github.com> Date: Thu, 12 Aug 2021 09:42:37 +0800 Subject: [PATCH 3/3] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200714.=E4=B9=B0?= =?UTF-8?q?=E5=8D=96=E8=82=A1=E7=A5=A8=E7=9A=84=E6=9C=80=E4=BD=B3=E6=97=B6?= =?UTF-8?q?=E6=9C=BA=E5=90=AB=E6=89=8B=E7=BB=AD=E8=B4=B9=20go=E7=89=88?= =?UTF-8?q?=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 添加 0714.买卖股票的最佳时机含手续费 go版本 --- ...买卖股票的最佳时机含手续费.md | 25 ++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/problems/0714.买卖股票的最佳时机含手续费.md b/problems/0714.买卖股票的最佳时机含手续费.md index 6dc95a2d..b0a64bd2 100644 --- a/problems/0714.买卖股票的最佳时机含手续费.md +++ b/problems/0714.买卖股票的最佳时机含手续费.md @@ -216,7 +216,30 @@ class Solution: # 贪心思路 ``` Go： - +```golang +func maxProfit(prices []int, fee int) int { + var minBuy int = prices[0] //第一天买入 + var res int + for i:=0;i=minBuy&&prices[i]-fee-minBuy<=0{ + continue + } + //可以售卖了 + if prices[i]>minBuy+fee{ + //累加每天的收益 + res+=prices[i]-minBuy-fee + //更新最小值（如果还在收获利润的区间里，表示并不是真正的卖出，而计算利润每次都要减去手续费，所以要让minBuy = prices[i] - fee;，这样在明天收获利润的时候，才不会多减一次手续费！） + minBuy=prices[i]-fee + } + } + return res +} +``` Javascript: ```Javascript // 贪心思路