我正在使用Splash套件库。
#include "splashkit.h"
#define NUM_VALS 100
//drawing 100 random values in chart
void draw_values(const int values[], int size)
{
int x = 0;
int y;
int rect_height;
int rect_width = screen_width() / size;
for (int i = 0; i < size; i++)
{
rect_height = values[i];
y = screen_height() - rect_height;
fill_rectangle(COLOR_RED, x, y, rect_width, rect_height);
draw_rectangle(COLOR_WHITE, x, y, rect_width, rect_height);
x += rect_width;
}
}
//swap procedure
void swap (int &value1, int &value2)
{
int temp = value1;
value1 = value2;
value2 = temp;
}
//draw array values window
void draw_sort(int values[], int size)
{
clear_screen(COLOR_WHITE);
draw_values(values, size);
refresh_screen(60);
}
//bubble sort code using above procedures
void bubble_sort (int values[], int size)
{
for (int j =0; j < size; j++)
{
for (int i =0; i < size - 1; i++ )
{
if (values[i] > values[i + 1])
{
swap(values[i], values[i + 1]);
draw_sort(values, size);
}
}
}
}
// i think something wrong in this function only
void quick_sort(int values[], int size) {
int i = values[size + 1] , j = values[size - 1] ;
int tmp;
int pivot = values[(i + j) / 2];
/* partition */
while (i <= j) {
while (values[i] < pivot)
i++;
while (values[j] > pivot)
j--;
if (i <= j) {
tmp = values[i];
values[i] = values[j];
values[j] = tmp;
i++;
j--;
}
};
/* recursion */
if (i < j)
quick_sort(values, i);
if (i < j)
quick_sort(values, j);
}
// randomising array values to sort
void random_fill_array(int values[], int size)
{
for (int i = 0; i < size; i++)
{
values[i] = rnd(screen_height()) + 1;
}
}
//to test each sort
void handle_input(int values[], int size)
{
if (key_typed(R_KEY))
{
random_fill_array(values, size);
}
else if (key_typed(S_KEY))
{
bubble_sort(values, size);
}
else if (key_typed(D_KEY))
{
quick_sort(values, size);
}
}
int main()
{
int values[NUM_VALS];
open_window("Sort Visualiser", 800, 600);
random_fill_array(values, NUM_VALS);
while ( not quit_requested() )
{
process_events();
handle_input(values, NUM_VALS);
draw_sort(values, NUM_VALS);
}
return 0;
}
我克服了早期的问题,但现在我遇到了一个新问题。这不是我的任务。我只是了解所有种类;请告诉我哪里出错了。
如果按“S”我的气泡&gt;我现在跑的时候试过修理它sort是&gt;得到排序,但当我按“D”应用程序崩溃时,任何人都可以看到我在哪里出错?
答案 0 :(得分:1)
这看起来很可疑:
class HelloWidget extends React.Component{
constructor(props) {
super(props);
this.state = {
activeTabIndex: 0
};
}
changeTab(newActiveTabIndex) {
this.setState({
activeTabIndex: newActiveTabIndex
});
}
render() {
const { activeTabIndex } = this.state;
return (
<div>
<ul>
<li
className={activeTabIndex === 0 ? 'active' : ''}
onClick={this.changeTab.bind(this, 0)}
>
Tab 1
</li>
<li
className={activeTabIndex === 1 ? 'active' : ''}
onClick={this.changeTab.bind(this, 1)}
>
Tab 2
</li>
<li
className={activeTabIndex === 2 ? 'active' : ''}
onClick={this.changeTab.bind(this, 2)}
>
Tab 3
</li>
</ul>
</div>
)
}
}
React.render(<HelloWidget />, document.getElementById('container'));
两种情况下的条件完全相同