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+### 冒泡排序
+
+```c
+#include <stdio.h>
+
+void bubblingSort(int *a, int n, int flag){
+	int i, j, t;
+	for(i=0;i<n-1;i++){
+		for(j=0;j<n-1-i;j++){
+			if(flag>0?a[j]>a[j+1]:a[j]<a[j+1]){
+				t = a[j];
+				a[j] = a[j+1];
+				a[j+1] = t;
+			}
+		}
+	}
+}
+
+void printArray(int *a, int n){
+	int i;
+	for(i=0;i<n;i++){
+		printf("%d ", a[i]);
+	}
+	printf("\n");
+}
+
+int main(){
+	int a[] = {100, 1, 3, 2, 9, -1, 20, 30, 10, 50};
+	int n = sizeof(a)/4;
+	bubblingSort(a, n, 1);
+	printArray(a, n);
+
+	return 0;
+}
+```
+
+
+
+### 选择排序
+
+
+
+### 插入排序
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