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Guard against negative inputs in Radixsort with user-friendly message #23

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Merged
Nullkernel merged 1 commit into from
Apr 7, 2026
Merged

Guard against negative inputs in Radixsort with user-friendly message #23

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13 changes: 13 additions & 0 deletions Sorting-algorithms/Radixsort.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,11 @@ public static void main(String[] args) {
for (int i = 0; i < n; i++) {
arr[i] = sc.nextInt();
}
if (containsNegative(arr)) {
System.out.println("This radix sort version supports non-negative integers only");
sc.close();
return;
}
System.out.println("Entered array : " + Arrays.toString(arr));
radixsort(arr);
System.out.println("Sorted array : " + Arrays.toString(arr));
Expand All @@ -50,6 +55,14 @@ public static int getMax(int[] arr) {
}
return max;
}
public static boolean containsNegative(int[] arr) {
for (int value : arr) {
if (value < 0) {
return true;
}
}
return false;
}
public static void countSort(int[] arr, int exp) {
int n = arr.length;
int[] output = new int[n];
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