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| class Solution {
public long findTheArrayConcVal(int[] nums) {
long concVal = 0;
int i = -1, j = nums.length;
while (++i < --j) {
int leftNum = nums[i], rightNum = nums[j];
concVal += (long) leftNum * getBase(rightNum) + rightNum;
}
if (i == j) {
concVal += nums[i];
}
return concVal;
}
private int getBase(int num) {
int product = 1;
while (num > 0) {
num /= 10;
product *= 10;
}
return product;
}
}
|
References
2562. Find the Array Concatenation Value