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-rw-r--r--continuous_subarr_sum.cpp31
1 files changed, 31 insertions, 0 deletions
diff --git a/continuous_subarr_sum.cpp b/continuous_subarr_sum.cpp
new file mode 100644
index 0000000..ceaf3ce
--- /dev/null
+++ b/continuous_subarr_sum.cpp
@@ -0,0 +1,31 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ bool checkSubarraySum(vector<int> &nums, int k) {
+ unordered_map<int, int> um;
+ int s = 0;
+ um[0] = -1;
+ for (int i = 0; i < nums.size(); i++) {
+ s += nums[i];
+ if (k != 0)
+ s %= k;
+ if (um.find(s) != um.end()) {
+ if (i - um[s] > 1)
+ return true;
+ } else
+ um[s] = i;
+ }
+ return false;
+ }
+};
+
+int main() {
+ Solution obj;
+ vector<int> nums = {23, 2, 4, 6, 7};
+ int k = 6;
+ if (obj.checkSubarraySum(nums, k))
+ cout << "true";
+ else
+ cout << "false";
+}