diff --git a/semana23/aulaa68.js b/semana23/aulaa68.js
new file mode 100644
index 0000000..d26bcc0
--- /dev/null
+++ b/semana23/aulaa68.js
@@ -0,0 +1,71 @@
+const isOneEdit = (inputString, targetString) => {
+
+    const removeLast = inputString.slice(0, -1); 
+
+    const addAtFinal = (inputString + targetString[targetString.length - 1]) ;
+
+    let changeOne = "" ;
+    let auxChange = 0 ;
+
+    if(inputString.length == targetString.length){
+
+        for (let i=0 ; i< inputString.length ; i++){
+            if(inputString[i]!= targetString[i]){
+                auxChange += 1 ;
+            }
+        }
+    }
+
+    if(removeLast == targetString){
+        return("String is 'one edit' of the target String")
+    }else if (addAtFinal == targetString) {
+        return("String is 'one edit' of the target String")
+    }else if (auxChange == 1){
+        return("String is 'one edit' of the target String")
+    }else{
+        return ("String is NOT 'one edit' of the target String")
+    }
+
+}
+
+
+const compressedString = (inputString) => {
+    
+    let auxNumber = 1;
+    let auxString = "";
+    let auxNewString = "";
+
+    for(char in inputString){
+        
+        if(char == 0){
+
+            auxNewString += inputString[char]
+
+        }else{
+
+            if(inputString[char] == inputString[char - 1]){
+                auxNumber += 1;
+                
+            }else{
+                auxNewString += auxNumber.toString()
+                auxNumber = 1;
+                auxNewString += inputString[char]
+            }
+
+            if(char == (inputString.length - 1 )){
+                auxNewString += auxNumber.toString()
+            }
+        }
+
+
+        
+    }
+
+    if(auxNewString.length < inputString.length){
+        return auxNewString
+    }else{
+        return inputString
+    }
+} 
+
+//console.log(compressedString("aabbb")) //a2b3