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37 lines (31 loc) · 909 Bytes
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3SumClosest.java
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37 lines (31 loc) · 909 Bytes
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public class ThreeSumClosest {
public int threeSumClosest(int[] nums, int target) {
int n = nums.length;
if(n == 0) return 0;
Arrays.sort(nums);
int minDiff = Integer.MAX_VALUE;
int num = 0;
for(int i=0; i < nums.length; i++){
int a = nums[i];
int bi = i+1;
int ci = n-1;
while(bi < ci){
int b = nums[bi];
int c = nums[ci];
int sum = a + b + c;
if(Math.abs(target - sum) < minDiff){
num = sum;
minDiff = Math.abs(target - sum);
}
if(sum < target){
bi++;
} else if(sum > target){
ci--;
} else {
return sum;
}
}
}
return num;
}
}