20250527 baekjoon

code_study/Baekjoon/c/10988.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int main(){
+    char s[101];
+    scanf("%s",s);
+    
+    int l=0;
+    for(int i=0; s[i]!='\0'; i++){
+        l++;
+    }
+
+    int flag = 1;
+    for(int i=0; i<l/2; i++){
+        if(s[i]!=s[l-i-1]){
+            flag = 0;
+            break;
+        }
+    }
+
+    printf("%d",flag);
+
+    return 0;
+}

code_study/Baekjoon/c/1157.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+int main(){
+    int arr[26] = {};
+    char s[1000001];
+
+    scanf("%s",s);
+
+    for(int i=0; s[i]!='\0'; i++){
+        if(s[i] >= 'a' && s[i] <= 'z'){
+            s[i]=s[i]-32;
+        }
+        arr[s[i]-'A']++;
+    }
+
+    int max_idx=0, max=0, dup;
+
+    for(int i=0; i<26; i++){
+        if(arr[i]>max){
+            max=arr[i];
+            max_idx=i;
+            dup=0;
+        } else if(arr[i]==max && max!=0){
+            dup=1;
+        }
+    }
+
+    printf("%c", !dup ? 'A'+max_idx : '?');
+
+    return 0;
+
+}

code_study/Baekjoon/c/2444.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+
+void prt(int itr, char c);
+
+int main(){
+    int n;
+    scanf("%d",&n);
+
+    for(int i=1; i<=n; i++){
+        prt(n-i,' ');
+        prt(2*i-1,'*');
+        printf("\n");
+    }
+
+    for(int i=1; i<n; i++){
+        prt(i,' ');
+        prt(2*(n-i)-1,'*');
+        printf("\n");
+    }
+}
+
+void prt(int itr, char c){
+    while(itr--){
+        printf("%c",c);
+    }
+}

code_study/Baekjoon/c/25083.c

@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int main(){
+    printf("         ,%c\'\"%d\n",'r',7); // (a)
+    printf("%c`-_   ,\'  ,/\n",'r'); 
+    printf(" \\. \". %c_%c\'\n",'L','r'); // 
+    printf("   `~\\/\n");
+    printf("      |\n");
+    printf("      |\n");  
+    return 0;  
+}

code_study/Baekjoon/c/3003.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int main(){
+
+    int a[6] = {1,1,2,2,2,8};
+    int b[6];
+
+    for(int i=0; i<6; i++){
+        scanf("%d",&b[i]);
+    }
+
+    for(int i=0; i<6; i++){
+        b[i] = a[i] - b[i];
+        printf("%d ",b[i]);
+    }
+
+    return 0;
+
+
+}