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authorRichard-Qin-X <richard.qin.001@gmail.com>2026-06-08 17:10:31 +0800
committerRichard-Qin-X <richard.qin.001@gmail.com>2026-06-08 17:10:31 +0800
commit72af0dedf9e18911da65b9a5c4906689e868d9fc (patch)
tree2ecbad93f96ab8ad7e26dc02cd02d802f853ab97 /rcc-legacy/tests/sysy_lvX/binary_search.sy
parent8faf6d290d6703b1775e0ad7a8928a4ebea4b11b (diff)
downloadrcc-project-72af0dedf9e18911da65b9a5c4906689e868d9fc.tar.gz
rcc-project-72af0dedf9e18911da65b9a5c4906689e868d9fc.tar.xz
[legacy] Add functional and performance test suites
Diffstat (limited to 'rcc-legacy/tests/sysy_lvX/binary_search.sy')
-rw-r--r--rcc-legacy/tests/sysy_lvX/binary_search.sy33
1 files changed, 33 insertions, 0 deletions
diff --git a/rcc-legacy/tests/sysy_lvX/binary_search.sy b/rcc-legacy/tests/sysy_lvX/binary_search.sy
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+++ b/rcc-legacy/tests/sysy_lvX/binary_search.sy
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+int BinSearch(int arr[],int len,int key) //折半查找法(二分法)
+{
+ int low=0; //定义初始最小
+ int high=len-1; //定义初始最大
+ int mid; //定义中间值
+ while(low<=high)
+ {
+ mid=(low+high)/2; //找中间值
+ if(key==arr[mid]) //判断min与key是否相等
+ return mid;
+ if(key>arr[mid]) //如果key>mid 则新区间为[mid+1,high]
+ low=mid+1;
+ else //如果key<mid 则新区间为[low,mid-1]
+ high=mid-1;
+ }
+ return -1; //如果数组中无目标值key,则返回 -1 ;
+}
+int main()
+{
+ int arr2[100];
+ int n;
+ int i = 0;
+ n = getint();
+ while(i<n){
+ arr2[i] = getint();
+ i = i + 1;
+ }
+ n = BinSearch(arr2,n,9);
+ putint(n);
+ return 0;
+}
+
+