下面java代码转化为c import java.util.*; public class Main{ public static void main(String args[]) { Scanner scan = new Scanner(System.in); String line; while (scan.hasNextLine()) { line = scan.nextLine().trim(); // please write your code here String[] strs=line.split("\\s+"); int[]ints=new int[strs.length]; for(int i=0;i<strs.length;i++) { ints[i]=Integer.valueOf(strs[i]); } try { int[]ints1=sort(ints); for(int i=0;i<ints1.length;i++) { System.out.print(ints1[i]+" "); } } catch (Exception e) { e.printStackTrace(); } System.out.println(); } } static int[] sort(int[] sourceArray) throws Exception { int[] arr = Arrays.copyOf(sourceArray, sourceArray.length); int maxDigit = getMaxDigit(arr); return radixSort(arr, maxDigit); } static int getMaxDigit(int[] arr) { int maxValue = getMaxValue(arr); return getNumLenght(maxValue); } static int getNumLenght(long num) { if (num == 0) { return 1; } int lenght = 0; for (long temp = num; temp != 0; temp /= 10) { lenght++; } return lenght; } static int getMaxValue(int[] arr) { int maxValue = arr[0]; for (int value : arr) { if (maxValue < value) { maxValue = value; } } return maxValue; } static int[] radixSort(int[] arr, int maxDigit) { int mod = 10; int dev = 1; for (int i = 0; i < maxDigit; i++, dev *= 10,mod *= 10) { int[][] counter = new int[20][0]; for (int j = 0; j < arr.length; j++) { int bucket = ((arr[j] % mod) / dev)+10; counter[bucket] = arrayAppend(counter[bucket], arr[j]); } int pos = 0; for (int[] bucket : counter) { for (int value : bucket) { arr[pos++] = value; } } } return arr; } static int[] arrayAppend(int[] arr, int value) { arr = Arrays.copyOf(arr, arr.length + 1); arr[arr.length - 1] = value; return arr; } }
时间: 2024-04-16 09:29:18 浏览: 25
下面是将Java代码转换为C的等效代码:
c
#include <stdio.h>
#include <stdlib.h>
int* arrayAppend(int* arr, int value, int length) {
arr = (int*)realloc(arr, (length + 1) * sizeof(int));
arr[length] = value;
return arr;
}
int getMaxValue(int* arr, int length) {
int maxValue = arr[0];
for (int i = 1; i < length; i++) {
if (maxValue < arr[i]) {
maxValue = arr[i];
}
}
return maxValue;
}
int getNumLength(long num) {
if (num == 0) {
return 1;
}
int length = 0;
for (long temp = num; temp != 0; temp /= 10) {
length++;
}
return length;
}
int getMaxDigit(int* arr, int length) {
int maxValue = getMaxValue(arr, length);
return getNumLength(maxValue);
}
int* radixSort(int* arr, int length, int maxDigit) {
int mod = 10;
int dev = 1;
for (int i = 0; i < maxDigit; i++, dev *= 10, mod *= 10) {
int** counter = (int**)malloc(20 * sizeof(int*));
for (int j = 0; j < 20; j++) {
counter[j] = (int*)malloc(0 * sizeof(int));
}
for (int j = 0; j < length; j++) {
int bucket = ((arr[j] % mod) / dev) + 10;
counter[bucket] = arrayAppend(counter[bucket], arr[j], sizeof(counter[bucket]) / sizeof(counter[bucket][0]));
}
int pos = 0;
for (int j = 0; j < 20; j++) {
for (int k = 0; k < sizeof(counter[j]) / sizeof(counter[j][0]); k++) {
arr[pos++] = counter[j][k];
}
free(counter[j]);
}
free(counter);
}
return arr;
}
int* sort(int* sourceArray, int length) {
int* arr = (int*)malloc(length * sizeof(int));
for (int i = 0; i < length; i++) {
arr[i] = sourceArray[i];
}
int maxDigit = getMaxDigit(arr, length);
return radixSort(arr, length, maxDigit);
}
int main() {
char line[100];
while (fgets(line, sizeof(line), stdin)) {
int ints[100];
int intsLength = 0;
char* token = strtok(line, " ");
while (token != NULL) {
ints[intsLength++] = atoi(token);
token = strtok(NULL, " ");
}
int* sortedInts = sort(ints, intsLength);
for (int i = 0; i < intsLength; i++) {
printf("%d ", sortedInts[i]);
}
printf("\n");
free(sortedInts);
}
return 0;
}
```
需要注意的是,C语言中没有内置的动态数组,因此我们需要使用`realloc`和`malloc`来动态分配和重新分配内存。另外,在C语言中,我们需要手动释放动态分配的内存,以避免内存泄漏。在这个C代码中,我们使用了`malloc`和`realloc`来分配和重新分配内存,并使用`free`来释放内存。
此外,为了与Java代码中的`Scanner`相对应,我们使用了`fgets`来从标准输入读取整行输入,并使用`strtok`来将输入字符串分割成整数数组。最后,我们通过循环打印排序后的整数数组,并在每行结束后释放内存。
请注意,上述代码是根据Java代码逐行转换得来的,可能不是最优的C实现。为了提高性能和效率,你可以进一步优化该代码。