g2101_2200.s2149_rearrange_array_elements_by_sign.Solution Maven / Gradle / Ivy
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Java Solution for LeetCode algorithm problems, continually updating
package g2101_2200.s2149_rearrange_array_elements_by_sign;
// #Medium #Array #Two_Pointers #Simulation #2022_06_08_Time_10_ms_(34.66%)_Space_231.2_MB_(5.61%)
public class Solution {
public int[] rearrangeArray(int[] nums) {
int[] negatives = new int[nums.length / 2];
int[] positives = new int[nums.length / 2];
int[] result = new int[nums.length];
int pPtr = 0;
int nPtr = 0;
int rPtr = 0;
for (int num : nums) {
if (num > 0) {
positives[pPtr++] = num;
} else {
negatives[nPtr++] = num;
}
}
pPtr = 0;
nPtr = 0;
while (pPtr < positives.length && nPtr < negatives.length) {
result[rPtr++] = positives[pPtr++];
result[rPtr++] = negatives[nPtr++];
}
return result;
}
}