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RemoveElement.java

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//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 by modifying the input array in-place with O(1) extra memory.

//The order of elements can be changed. It doesn't matter what you leave beyond the new length.

//Example:

//Given nums = [3,2,2,3], val = 3,

//Your function should return length = 2, with the first two elements of nums being 2.

class RemoveElement {

public int removeElement(int[] nums, int val) {

int index = 0;

for(int i = 0; i < nums.length; i++) {

if(nums[i] != val) {

nums[index++] = nums[i];

}

}

return index;

}

}