| 3162|[Find the Number of Good Pairs I](https://leetcode.com/problems/find-the-number-of-good-pairs-i/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3162.java)|| Easy|

| 3158|[Find the XOR of Numbers Which Appear Twice](https://leetcode.com/problems/find-the-xor-of-numbers-which-appear-twice/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3158.java)|| Easy|

| 3157 |[Find the Level of Tree with Minimum Sum](https://leetcode.com/problems/find-the-level-of-tree-with-minimum-sum/) |[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3157.java) | | Medium |BFS

| 3151|[Special Array I](https://leetcode.com/problems/special-array-i/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3151.java)|| Easy|

| 3142|[Check if Grid Satisfies Conditions](https://leetcode.com/problems/check-if-grid-satisfies-conditions/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3142.java)|| Easy|

| 3131|[Find the Integer Added to Array I](https://leetcode.com/problems/find-the-integer-added-to-array-i/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3131.java)|| Easy|

| 3127|[Make a Square with the Same Color](https://leetcode.com/problems/make-a-square-with-the-same-color/)|[Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3127.java)|| Easy|

packagecom.fishercoder.solutions.fourththousand;

publicclass_3151 {

publicstaticclassSolution1 {

publicbooleanisArraySpecial(int[]nums) {

for (inti =1;i <nums.length;i++) {

if (nums[i -1] %2 ==nums[i] %2) {

returnfalse;

}

}

returntrue;

}

}

}