使用Java创建条形图
我正在做一个作业,用Java创建一个使用随机数的条形图,但我不知道如何正确编码,当我进入下一步时,它会不断给出错误使用Java创建条形图,java,histogram,bar-chart,Java,Histogram,Bar Chart,我正在做一个作业,用Java创建一个使用随机数的条形图,但我不知道如何正确编码,当我进入下一步时,它会不断给出错误 public class BinSort { final int N_BINS = 0; //number of bins final int N_SAMPLES = 0; //total random integers final float BIN_WIDTH = 0;
public class BinSort {
final int N_BINS = 0; //number of bins
final int N_SAMPLES = 0; //total random integers
final float BIN_WIDTH = 0; //width of the bin
int [] nums; //generate and store random numbers
int [] binCount; //array
int max = 0; //largest random number = (max-1)
public void main(String[] args) {
int nBins, nSamples; //initializers
BIN_WIDTH = (float) (max/N_BINS); //calculate BIN_WIDTH
nums = new int[] {}; //initialize nums array
for (int i = 0; i < max; i++) {
int array = nums[i];
}
}
public void generateBins() {
int bin;
int [] binCount = new int [N_BINS]; //set binCount array with N_BINS elements
for (int i = 0; i < N_SAMPLES; i++) {
int array = binCount[i];
bin = (int) Math.floor(nums[i]/BIN_WIDTH);
}
}
public void printBins() {
float freq;
for(int i = 0; i < binCount.length; i++) {
freq = (binCount[i]/N_SAMPLES);
System.out.print(N_SAMPLES + " random integers in " + binCount + " sorted into " + N_BINS + " bins:");
float binMin = i * BIN_WIDTH;
float binMax = binMin + BIN_WIDTH;
System.out.println(binCount[i] + freq + binMin + binMax);
}
}
}
公共类BinSort{
final int N_bin=0;//bin的数量
final int N_SAMPLES=0;//总随机整数
最终浮箱_WIDTH=0;//浮箱的宽度
int[]nums;//生成并存储随机数
int[]binCount;//数组
int max=0;//最大随机数=(max-1)
公共void main(字符串[]参数){
int nBins,nSamples;//初始值设定项
仓位宽度=(浮动)(最大/N仓位);//计算仓位宽度
nums=newint[]{};//初始化nums数组
对于(int i=0;i
此代码不完整,但我不知道下一步要做什么。所以,我被卡住了。
有人能帮我吗
编辑:程序在eclipse中运行后不会编译。它表示执行在控制台中终止。静态方法中只能使用静态变量。下面的代码很好:
public class BinSort {
static final int N_BINS = 0; //number of bins
static final int N_SAMPLES = 0; //total random integers
static float BIN_WIDTH = 0; //width of the bin
static int [] nums; //generate and store random numbers
int [] binCount; //array
static int max = 0; //largest random number = (max-1)
public static void main(String[] args) {
int nBins, nSamples; //initializers
BIN_WIDTH = (float) (max/N_BINS); //calculate BIN_WIDTH
nums = new int[] {}; //initialize nums array
for (int i = 0; i < max; i++) {
int array = nums[i];
}
}
public void generateBins() {
int bin;
int [] binCount = new int [N_BINS]; //set binCount array with N_BINS elements
for (int i = 0; i < N_SAMPLES; i++) {
int array = binCount[i];
bin = (int) Math.floor(nums[i]/BIN_WIDTH);
}
}
public void printBins() {
float freq;
for(int i = 0; i < binCount.length; i++) {
freq = (binCount[i]/N_SAMPLES);
System.out.print(N_SAMPLES + " random integers in " + binCount + " sorted into " + N_BINS + " bins:");
float binMin = i * BIN_WIDTH;
float binMax = binMin + BIN_WIDTH;
System.out.println(binCount[i] + freq + binMin + binMax);
}
}
}
公共类BinSort{
静态final int N_bin=0;//bin数
静态final int N_SAMPLES=0;//总随机整数
静态浮点存储单元\u WIDTH=0;//存储单元的宽度
静态int[]nums;//生成并存储随机数
int[]binCount;//数组
静态int max=0;//最大随机数=(max-1)
公共静态void main(字符串[]args){
int nBins,nSamples;//初始值设定项
仓位宽度=(浮动)(最大/N仓位);//计算仓位宽度
nums=newint[]{};//初始化nums数组
对于(int i=0;i
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