蓝桥杯-蓝桥杯竞赛练习题-详细题解-题解源码

int missingNumber(int* nums, int numsSize){ int sum=0,sum1=0; sum=numsSize+((numsSize)*(numsSize-1)/2); for(int i=0;i<numsSize;i++) { sum1+=*(nums+i); } return sum-sum1; }