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tools.c
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176 lines (142 loc) · 2.65 KB
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//
// Created by ys on 2019/4/7.
//
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include "tools.h"
//extern FILE *fp;
/*
*
* 输出到文件
* FILE *fp;
time_t t;
fp = fopen("log.txt","a");
fprintf(fp,"你好哈哈%d\n",123);
fclose(fp);
*
*
*/
//产生一个随机整数 范围minVal-maxVal
int randint(int minVal, int maxVal)
{
int r;
r = minVal + rand()%(maxVal - minVal + 1);
return r;
}
void readFile()
{
int ch;//定义文件类型指针
FILE *fp;//判断命令行是否正确
fp = fopen("../abctest.txt","r");
while((ch=fgetc(fp))!=EOF)
{
putchar(ch);
}
fclose(fp);
}
void readData()
{
FILE *fp;
fp = fopen("../data/1000000.csv","r");
int a[100000];
for (int i = 0; i < 100000; ++i) {
fscanf(fp,"%d,",&a[i]);
// printf("%d\t",a[i]);
// if((i+1)%10==0)
// {
// printf("\n");
// }
}
fclose(fp);
int start = clock();
bubbleSort(a, 100000);
int end = clock();
for (int i = 0; i < 100000; ++i) {
printf("%d\t",a[i]);
if((i+1)%10==0)
{
printf("\n");
}
}
printf("排序用时%dms",end-start);
}
//冒泡排序
void bubbleSort(int a[], int n) {
for (int i = 0; i < n-1; ++i) {
for (int j = i + 1; j < n; ++j) {
if (a[i] > a[j]) {
int tmp;
tmp = a[i];
a[i] = a[j];
a[j] = tmp;
}
}
}
}
/*
void testFp()
{
fp = fopen("log.txt","a");
fprintf(fp,"hello,world file:%s fun:%s line:%d\n",__FILE__, __FUNCTION__, __LINE__);
fclose(fp);
}
*/
void printDebug()
{
printf("debug.........\n");
}
void readFromFile(char *fname, ElemType * arr, int arrLen)
{
FILE *fp;
fp = fopen(fname, "r");
for (int j = 1; j <= arrLen ; ++j) {
fscanf(fp, "%10d", &arr[j]);
if((j % 10)==0)
{
fgetc(fp);
}
}
fclose(fp);
}
void printToFile(char *fname, ElemType *arr, int arrLen)
{
FILE *fp;
fp = fopen(fname, "w");
for (int j = 1; j <= arrLen ; ++j) {
fprintf(fp, "%10d", arr[j]);
if((j % 10)==0)
{
fprintf(fp, "\n");
}
}
fclose(fp);
}
void testRand()
{
for (int i = 1; i <= 20; ++i) {
printf("%8d",randint(1,10000));
if((i%10)==0)
{
printf("\n");
}
}
}
void printArr(ElemType *arr, int len)
{
for (int i = 1; i <= len; ++i) {
printf("%8d",arr[i]);
if(i%10==0)
{
putchar('\n');
}
}
}
//俩数交换
void swap(int *a, int *b)
{
int tmp;
tmp = *a;
*a = *b;
*b = tmp;
}