hanfei1991

import random
import os

row_cnt = 100000
max_array_sz = 20
col_num = 2

for row in range(row_cnt):
    array_sz = random.randint(0, max_array_sz);
    insert = "insert into test values ("

hanfei1991

package main

import (
	"fmt"
	"log"
	"os"
	"os/exec"
	"strconv"
	"sync"
)

hanfei1991

#!/usr/bin/env python3

from yaml import load, dump, FullLoader
import sys

file_name = sys.argv[1]

def process_ua(data):
    for node in data:
        if 'family_replacement' not in node:

hanfei1991

[2020/12/15 02:12:39.009 +08:00] [INFO] [<unknown>] ["grpc: /data1/jaysonhuang/grpc/src/core/lib/surface/call.cc, line number : 1967, log msg : grpc_call_start_batch(call=0x7f51fb22e060, ops=0x7f50ba7d8de0, nops=1, tag=0x7f5186064f80, reserved=(nil))"] [thread_id=272]
[2020/12/15 02:12:39.009 +08:00] [INFO] [<unknown>] ["grpc: /data1/jaysonhuang/grpc/src/core/lib/surface/call.cc, line number : 1565, log msg : ops[0]: SEND_MESSAGE ptr=0x7f51a0420140"] [thread_id=272]
[2020/12/15 02:12:39.009 +08:00] [INFO] [<unknown>] ["grpc: /data1/jaysonhuang/grpc/src/core/ext/transport/chttp2/transport/chttp2_transport.cc, line number : 1658, log msg : perform_stream_op[s=0x7f51fb22f450]:  SEND_MESSAGE:flags=0x00000000:len=135023"] [thread_id=272]
[2020/12/15 02:12:39.009 +08:00] [INFO] [<unknown>] ["grpc: /data1/jaysonhuang/grpc/src/core/ext/transport/chttp2/transport/chttp2_transport.cc, line number : 1360, log msg : perform_stream_op_locked:  SEND_MESSAGE:flags=0x00000000:len=135023; on_complete = 0x7f51fb22f290"] [threa

hanfei1991

Agenda

• 2 month (2019.11 - 2019.12)
  • C++ and basic algorithm
  • website for training
    • (codeforces)[www.codeforces.com]
    • (leetcode)[www.leetcode.com]
  • What need you to prepare ?
    • Two Books
• (the C programming language)[https://item.jd.com/32656088549.html]

hanfei1991

x = ['ab', 'bc', 'de']
y = ['abc', 'b', 'be', 'bce']

def foo(x, y): 
    for xx in x:
        y = list(filter(lambda yy: xx not in yy, y)) 
    return y

print foo(x,y)