Interview 150
Move Zeroes
- Problem
- LC 283
- File
- interview150_LC283MoveZeroes.java
- Path
- pkg5leetcode/interview150/interview150_LC283MoveZeroes.java
- Package
- pkg5leetcode.interview150
- Command
- java pkg5leetcode/interview150/interview150_LC283MoveZeroes.java
- Approach
- Write non-zero values forward; zero-fill rest.
- Complexity
- Time O(n), Space O(1)
There is no in-browser runner. This is the file from the curriculum, unchanged.
1package pkg5leetcode.interview150;2 3/*4 * Move Zeroes | LC 2835 * APPROACH: Write non-zero values forward; zero-fill rest.6 * COMPLEXITY: Time O(n), Space O(1)7 */8public class interview150_LC283MoveZeroes {9 static void moveZeroes(int[] nums) {10 int k = 0;11 for (int x : nums) if (x != 0) nums[k++] = x;12 while (k < nums.length) nums[k++] = 0;13 }14 15 public static void main(String[] args) {16 int[] a = {0, 1, 0, 3, 12};17 moveZeroes(a);18 check(java.util.Arrays.equals(a, new int[]{1, 3, 12, 0, 0}), "case1");19 int[] b = {0};20 moveZeroes(b);21 check(java.util.Arrays.equals(b, new int[]{0}), "case2");22 System.out.println("all tests passed");23 }24 25 static void check(boolean cond, String name) {26 if (!cond) throw new AssertionError("FAILED: " + name);27 System.out.println(" PASS " + name);28 }29}