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Ankhellvs.ParanoidUser

"Remove All The Marked Elements of a List" Java Translation

Dont use memory to allocate a list

Code
Diff
  • import java.util.Arrays;

import static java.util.stream.IntStream.of;

interface Kata {
    static int[] remove(int[] array, int[] exclude) {
        Arrays.sort(exclude);
        return of(array).filter(i -> Arrays.binarySearch(exclude, i) < 0).toArray();
    }
}
    • import java.util.Arrays;
    • import static java.util.stream.IntStream.of;
    • interface Kata {
    • static int[] remove(int[] array, int[] exclude) {
    • var forRemoval = of(exclude).boxed().toList();
    • return of(array).filter(i -> !forRemoval.contains(i)).toArray();
    • }
    • static int[] remove(int[] array, int[] exclude) {
    • Arrays.sort(exclude);
    • return of(array).filter(i -> Arrays.binarySearch(exclude, i) < 0).toArray();
    • }
    • }
Ankhellvs.iKhetag

Searching substring inside another string

Algorithms
Logic
Search
Strings
Data Types
Code
Diff
  • fun findFirstSubString(string: String, subString: String): Int? =
    subString.takeIf { it.isNotEmpty() }?.let { string.indexOf(subString) }.takeIf { it != -1 }
    • fun findFirstSubString(string: String, subString: String): Int? =
    • if (subString.isEmpty()) null
    • else string.indexOf(subString).let { if (it == -1) null else it }
    • subString.takeIf { it.isNotEmpty() }?.let { string.indexOf(subString) }.takeIf { it != -1 }