diff --git a/check-distances-between-same-letters/index.ts b/check-distances-between-same-letters/index.ts
new file mode 100644
index 00000000..81e9879b
--- /dev/null
+++ b/check-distances-between-same-letters/index.ts
@@ -0,0 +1,20 @@
+export default function checkDistances(s: string, distance: number[]): boolean {
+const mp=new Map<number,number>()
+
+for(const [i,c]of Array.prototype.entries.call(s)){
+    
+    
+    
+    const key=c.charCodeAt(0)-"a".charCodeAt(0)
+    const last=mp.get(key)
+    
+    if(mp.has(key)&&typeof last !=="undefined"&&i-last-1!==distance[key]){
+        
+        return false
+        
+    }else{
+        mp.set(key,i)
+    }
+}
+return true
+}