二分法查找适合于有序集合或数组
static int HalfSearch(int[] numArr,int num){ //确定查找的范围 int low = 0; int high = numArr.Length-1; int mid = 0; while (low <= high) { mid = (low + high) / 2; if (numArr[mid] == num) { return mid; } else if (numArr[mid] > num) { high = mid - 1; } else { low = mid + 1; } } return -1;}新闻热点
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