Given an array and a value, remove all instances of
that value in place and return the new length.
Do not allocate extra space for another array, you must
do this in place with constant memory.
The order of elements can be changed. It doesn’t matter
what you leave beyond the new length.
Example:
Given input array nums = [3,2,2,3], val =
3
Your function should return length = 2, with the first
two elements of nums being 2.
Java Solution
public class Solution {
public int removeElement(int[] nums, int val) {
if (nums.length == 0)
return 0;
int j =0;
for (int i=0; i < nums.length; i++) {
if (nums[i] != val)
nums[j++] = nums[i];
}
return j++;
}
}