Merge pull request #1928 from codeflash-ai/codeflash/optimize-Workload.repeatString-mndmishx

claude[bot] · web-flow · commit 01cb9f8709cb · 2026-03-30T22:28:10.000Z
⚡️ Speed up method `Workload.repeatString` by 521%
diff --git a/tests/test_languages/fixtures/java_tracer_e2e/src/main/java/com/example/Workload.java b/tests/test_languages/fixtures/java_tracer_e2e/src/main/java/com/example/Workload.java
@@ -14,11 +14,12 @@ public static int computeSum(int n) {
     }
 
     public static String repeatString(String s, int count) {
-        String result = "";
-        for (int i = 0; i < count; i++) {
-            result = result + s;
+        if (count <= 0) {
+            return "";
         }
-        return result;
+        // Preserve original behavior where null becomes "null"
+        String unit = String.valueOf(s);
+        return unit.repeat(count);
     }
 
     public static List<Integer> filterEvens(List<Integer> numbers) {

Original file line number	Diff line number	Diff line change
`@@ -14,11 +14,12 @@ public static int computeSum(int n) {`
`14`	`14`	`}`
`15`	`15`
`16`	`16`	`public static String repeatString(String s, int count) {`
`17`		`- String result = "";`
`18`		`- for (int i = 0; i < count; i++) {`
`19`		`- result = result + s;`
	`17`	`+ if (count <= 0) {`
	`18`	`+ return "";`
`20`	`19`	`}`
`21`		`- return result;`
	`20`	`+ // Preserve original behavior where null becomes "null"`
	`21`	`+ String unit = String.valueOf(s);`
	`22`	`+ return unit.repeat(count);`
`22`	`23`	`}`
`23`	`24`
`24`	`25`	`public static List<Integer> filterEvens(List<Integer> numbers) {`