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219:存在重复元素 II

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轩辕龙儿 2022-01-19 11:08:55 +08:00
parent 1bf9d0ab45
commit 3a770d5c98
1 changed files with 7 additions and 4 deletions
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11
src/main/java/leetcode/editor/cn/ContainsDuplicateIi.java
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@ -21,6 +21,9 @@
package leetcode.editor.cn;
import java.util.HashMap;
import java.util.Map;
//219:存在重复元素 II
class ContainsDuplicateIi {
public static void main(String[] args) {
@ -35,12 +38,12 @@ class ContainsDuplicateIi {
if (k <= 0) {
return false;
}
Map<Integer, Integer> map = new HashMap<>();
for (int i = 0; i < nums.length; i++) {
for (int j = i + 1; j <= Math.min(i + k, nums.length - 1); j++) {
if (nums[i] == nums[j]) {
return true;
}
if (map.containsKey(nums[i]) && i - map.get(nums[i]) <= k) {
return true;
}
map.put(nums[i], i);
}
return false;
}