查找--二分查找

    xiaoxiao2025-04-11  16

    二分查找

    二分查找主要是针对有序序列(部分有序序列)的元素进行查找

    public int bin_search(int a[],int key){ if(a==null||a.length<2) return a; int lo = 0; int hi = a.length-1; while(lo<=hi){ int mid = lo+(hi-lo)/2; if(a[mid]==key) return mid; else if(a[mid]>key) hi = mid-1; else lo = mid+1; } return lo; }

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