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class Solution {

public int[] exchange(int[] nums) {

if(nums.length==0)

{

return nums;

}

int j = nums.length-1;

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

{

if(i>=j)

{

break;

}

while(nums[j]%2==0)

{

if(i<j)

{

j--;

}

else{

return nums;

}

}

if(nums[i]%2==0)

{

int t =nums[i];

nums[i] = nums[j];

nums[j] = t;

}

}

return nums;

}

}