Repeat Evolution
1639. Number of Ways to Form a Target String Given a Dictionary
2 attempts over 623 days. This page compares how the solution size, thinking trace, and stuck markers changed between posts.
Timeline Shape
Bars are normalized inside this problem, so the widest bar is the largest attempt in that metric.
Attempt Gallery
Each card is a daily post, with local deltas from the previous attempt.
Attempt 1 · 16.04.2023
hard1639. Number of Ways to Form a Target String Given a Dictionary
standard
kotlin
precompute the freq array - count of each character at each position
Attempt 2 · 29.12.2024
hard1639. Number of Ways to Form a Target String Given a Dictionary
compact
rust
623 days later
lines -11
chars -312
thoughts +22
Ways to make target with increasing positions in words programming
What Changed
Compact generated readout from the first and latest attempts.
-11 lines, -312 chars.
+22 lines between first and latest attempt.
11 lines, 451 chars.
0 stuck attempts, 0 one-liner attempts.