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Given an array numbers, write a java function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. You must do this in-place without making a copy of the array. Minimize the total number of operations. Example: Input: {0,1,0,12,11} Output: {1,12,11,0,0}
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/* | |
Given an array numbers, write a java function to move all 0's to the end of | |
it while maintaining the relative order of the non-zero elements. | |
You must do this in-place without making a copy of the array. | |
Minimize the total number of operations. | |
Example: | |
Input: {0,1,0,12,11} | |
Output: {1,12,11,0,0} | |
*/ | |
public class AlogProblem { | |
public static void moveZeros(int [] numbers) { | |
final int value = 0; | |
int arrLength = numbers.length; | |
int i = arrLength - 1; | |
int current ; | |
int temp; | |
while( 0 <= i) { | |
if(numbers[i] == value) { | |
temp = numbers[i]; | |
current = i; | |
do { | |
int index = current + 1; | |
if(index == arrLength) break; | |
if(numbers[index] != value) { | |
numbers[current] = numbers[index]; | |
numbers[index] = temp; | |
current++; | |
} else { | |
break; | |
} | |
} while(true); | |
} | |
i--; | |
} | |
} | |
} |
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