Time: 14 ms (82.94%), Space: 45.9 MB (23.44%) - LeetHub

py3-coder · py3-coder · commit 69dd288cbe11 · 2024-12-05T08:44:47.000+05:30
diff --git a/2337-move-pieces-to-obtain-a-string/2337-move-pieces-to-obtain-a-string.java b/2337-move-pieces-to-obtain-a-string/2337-move-pieces-to-obtain-a-string.java
@@ -1,27 +1,29 @@
 class Solution {
-    public boolean canChange(String start, String target) {
+    public boolean canChange(String s, String t) {
+        // TC - O(n)
+        // SC -(1)
         int i=0,j=0;
-        int n= start.length();
+        int n= s.length();
         while(i<n || j<n){
-            while(i<n && start.charAt(i)=='_'){
+            while(i<n && s.charAt(i)=='_'){
                i++;
             }
-            while(j<n && target.charAt(j)=='_'){
+            while(j<n && t.charAt(j)=='_'){
                j++;
             }
             //System.out.print("i - "+i+" "+"j -"+j+" , ");
             
-            if (i == j && i == start.length()) {
+            if (i == j && i == n) {
                 return true;
             }
             
             //both are not equal : 
-            if (i == start.length() || j == target.length() || start.charAt(i) != target.charAt(j)) {
+            if (i == n || j == n || s.charAt(i) != t.charAt(j)) {
                 return false;
             }
             
             //both are equal :
-            if((target.charAt(j)=='L' && i<j) || (target.charAt(j)=='R' && i>j)){
+            if((t.charAt(j)=='L' && i<j) || (t.charAt(j)=='R' && i>j)){
                 return false;
             }
             i++;
