Created
March 20, 2017 01:55
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// Class name must be "Main" | |
import java.util.Arrays; | |
class Main { | |
/** | |
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. | |
*/ | |
public static void main(String[] args) { | |
int[] nums = new int[]{3,2,2,3}; | |
int val = 3; | |
Main main = new Main(); | |
int newLength = main.removeElement(nums, val); | |
System.out.println("newLength " + newLength ); | |
System.out.println("Array=> " + Arrays.toString(nums)); | |
} | |
//Complexity O(n) | |
public int removeElement(int[] nums, int val) { | |
int newLength = 0; | |
for ( int i = 0 ; i < nums.length ; i++ ){ | |
int value = nums[i]; | |
if ( value != val ){ | |
nums[newLength] = value; | |
newLength++; | |
} | |
} | |
return newLength; | |
} | |
} |
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